Restrictive Covenants in UK Employment Contracts: Are They Enforceable?

Restrictive covenants in a UK employment contract are enforceable only if they protect a legitimate business interest and go no further than reasonably necessary to protect it. Courts start from the position that any clause restraining you from earning a living is void, and it is your employer who has to justify it. In practice, that means many of the clauses employees worry about, especially broad non-competes, would struggle to survive a challenge.

That is not the same as saying you can ignore them. An overreaching covenant can still cost you a job offer, a legal bill, or a year of second-guessing. This guide explains the four types of restrictive covenant, the test UK courts apply, how enforcement actually plays out, what to check before you sign, and how to narrow a clause that reaches further than it should.

Key Takeaways

• UK courts treat post-termination restrictions as an unlawful restraint of trade unless the employer shows a legitimate business interest and a clause that goes no further than reasonably necessary to protect it.

• There are four main types: non-compete, non-solicitation, non-dealing and non-poaching. Each is assessed separately, so one falling does not take the others with it.

• Duration, geography, the definition of "competitor" and your seniority all feed the reasonableness test. Six months is commonly defensible for senior roles, 12 months needs real justification, and time on garden leave normally counts towards the period.

• Reasonableness is judged at the date you signed, not the date you leave, and a court will sever offending words in limited circumstances but never rewrite a clause to save it (Tillman v Egon Zehnder [2019] UKSC 32).

• Enforcement almost always starts with a solicitor's letter rather than a claim. The practical risk of a weak covenant is a nervous new employer withdrawing an offer, not a judgment against you.

What is a restrictive covenant in an employment contract?

A restrictive covenant is a clause that limits what you can do after your employment ends: who you can work for, which clients you can deal with, and which colleagues you can recruit. They usually sit near the end of the contract, under headings like "Post-Termination Restrictions" or simply "Restrictions".

Employers use them to stop departing employees walking out with the things the business considers its own: client relationships, confidential information, and the rest of the team. That is a legitimate aim in principle; the legal argument is almost always about whether the specific clause goes further than the aim requires.

Restrictive covenants are not the same as confidentiality clauses, which protect information and can last indefinitely, or garden leave, which keeps you employed, paid and out of the market during notice. Restrictions can also hide in other documents. If your concern is a confidentiality agreement rather than your contract, see our guide on whether an NDA can stop you working for competitors.

The contract in your inbox is not always the only place to look. Covenants also appear in share option plans, bonus schemes, shareholders' agreements, commission plans and separate "restrictive covenant deeds" handed over at promotion. Where restrictions are given as part of selling a business or a stake in one, courts judge them far more leniently, because the two sides are treated as commercial equals rather than employer and employee. The same words can bind harder in a shareholders' agreement than they would in your contract of employment.

The four types of restrictive covenant (and which one you have)

Most UK employment contracts use some combination of four restrictions. Identifying which ones you actually have is the first step, because they carry very different weight in court.

A single "Restrictions" section frequently contains all four, each with its own duration. Read them as separate promises, because that is how a court will: an unenforceable 12-month non-compete can sit next to a perfectly enforceable six-month non-solicitation clause.

Read the definitions with them. The restriction itself is often one line, and all the real width sits in the defined terms above it: "Restricted Business", "Restricted Period", "Relevant Client", "Restricted Territory". A common trap is the definition of the employer. If "the Company" is defined to include every group company, a clause that looks like it protects your team's business quietly reaches across every division and country your employer owns, including parts of it you have never worked with. That is a strong sign the clause was drafted from a template rather than for your job.

Each of these has its own page in our clause library, with the wording to look for and the test a court applies: restrictive covenants as an umbrella, then the non-compete clause and the non-solicitation clause individually.

When is a restrictive covenant enforceable in the UK?

A restrictive covenant is enforceable when it passes a two-part test that has been settled law for over a century: the employer must have a legitimate business interest to protect, and the clause must go no further than reasonably necessary to protect it. The burden sits with the employer. You do not have to prove the clause is unfair; they have to prove it is justified.

What counts as a legitimate business interest

UK courts recognise a short list of interests worth protecting:

• Client and customer connections, meaning the goodwill built with the people you dealt with on the employer's behalf

• Confidential information and trade secrets, such as pricing models, margins, client requirements, product plans and tender strategy

• Stability of the workforce, which is what a non-poaching clause protects

What does not count is just as important. Protection against ordinary competition is not a legitimate interest, and neither is your own professional skill. The law draws a firm line between the employer's property and yours: the experience, judgement and general know-how you built while working there leave with you, whatever the contract says. A clause that in substance stops you doing your job for anyone else, rather than protecting a specific client base or a specific body of confidential information, is aimed at the wrong target.

Reasonableness is judged at the date you signed

This one catches people out, and it usually catches them out in the employee's favour. A covenant is measured against the job you had when you agreed to it, not the job you had when you left.

In Patsystems Holdings v Neilly [2012] EWHC 2609 (QB), an employee joined as an account manager in 2000 with a 12-month non-compete in his contract, and was promoted to Director of Global Accounts five years later. The court held the clause had been unreasonable for the junior role he was hired into, and that a later promotion could not turn a void covenant into a valid one. A general acknowledgement that his existing terms continued did not revive it either.

So if a standard template put executive-grade restrictions on you at graduate or mid level, seniority you gained afterwards does not rescue the clause. It is worth digging out the contract you actually signed, and the date you signed it, rather than working from the latest version in the staff handbook.

Courts sever, they never rewrite

If part of a covenant is too wide, a court will not redraft it into something reasonable. In Tillman v Egon Zehnder [2019] UKSC 32, the Supreme Court confirmed that offending words can sometimes be struck out, provided three conditions hold: the words can be deleted without adding or changing anything that remains, the rest of the contract is still supported by adequate consideration, and removing them does not make a major change to the overall effect of the restrictions.

The practical reading is simple. A clause with one stray phrase in it may survive without that phrase. A clause that is wide in its bones falls in one piece, because there is nothing to delete that would save it.

Duration: how long is too long?

There is no statutory maximum, but the practical benchmarks are consistent. A 6 month non-compete clause on a senior employee with real client influence is the kind of restriction courts do uphold; 12 months is exceptional, and anything longer is rare outside the sale of a business. Citizens Advice's guidance for employees treats six months as the point at which a restriction starts to look unreasonable unless the role or industry justifies more.

Duration is never judged on its own. A 12-month restriction limited to the handful of clients you personally managed is a very different proposition from a 12-month bar on the whole industry, and courts weigh the length against how much ground the clause covers.

One frequently missed point: time spent on garden leave often reduces the covenant period. Where an employer keeps you out of the market for three months on full pay and then asks a court to keep you out for another twelve, the total is what gets scrutinised. If your contract has no express set-off clause, that is worth querying before you sign. The same goes for a payment in lieu of notice clause, which ends your employment early and starts the restricted period sooner than you might expect. Restrictions can also be revisited on the way out: a settlement agreement sometimes tries to widen them, and you are not obliged to accept wider terms than your contract already imposed.

Geography and scope

The restriction has to map onto where your employer actually competes and what you actually did. A UK-wide non-compete on a regional sales role is doing more work than the legitimate interest requires. The same goes for scope: "any business similar to or competitive with the Company" reaches further than the specific work you did for the clients you served, and it is the broad version that fails.

Watch for geography that has stopped meaning anything. In a business where the work is remote and the clients are national, a radius clause drawn around an office address is either meaningless or absurdly wide, and neither reading helps the employer.

Your role and seniority

The more senior you are, and the closer you sit to clients and confidential information, the more restriction a court will accept. A director with the client book is a genuine flight risk; a junior employee with no client ownership is not. If a standard template imposes executive-grade covenants on a mid-level role, that mismatch is one of the strongest signs the clause was never drafted with enforceability in mind.

What did you get in return?

A covenant in the contract you signed before starting is supported by the job itself. A covenant introduced part way through your employment is a different question, because a promise needs something in return to bind you.

If new restrictions arrived with a promotion, a pay rise or a bonus, the employer is on solid ground. If they arrived in a revised handbook, an email asking you to acknowledge updated terms, or a document you were told to sign with nothing offered alongside it, the position is weaker and worth raising. Ask what changed and what you received for it. The answer tells you a lot about how confident the business would be about enforcing the clause.

Is your clause likely enforceable? A quick framework

Only a court can decide for certain, but six questions give you a well-informed judgement:

1. Which covenant is it? A non-solicitation clause starts from a stronger position than a non-compete.

2. What interest does it protect? Client relationships you personally held, or just "no competition, anywhere"?

3. How long does it last? Under six months is defensible territory; over 12 months needs a very good reason.

4. Where and what does it cover? The employer's actual market and your actual work, or an entire industry?

5. Did it fit your role when you signed? Covenants are judged against the job you had at signature, not the one you left with.

6. What did you get for agreeing to it? A covenant added mid-employment with nothing offered in return is on shakier ground than one you accepted with the job.

Compare two shapes. "For six months, you will not solicit business from clients with whom you personally dealt in your final 12 months" ticks every box. "For 12 months, you will not be engaged in any business competing with the Company anywhere in the United Kingdom", attached to a mid-level role, fails most of them.

If you are staring at your own Restrictions section and want more than a gut feeling, upload your contract to Ookulli. It flags every post-termination restriction and shows the UK law behind each flag, so you can check the reasoning yourself. The first look is free, a full review costs from £10 per document, and your document is never used to train AI models.

Can your employer actually stop you working for a competitor?

Sometimes, but enforcement is rarer than the threatening wording suggests. Enforcing a covenant means going to court, usually for an injunction and sometimes damages, with the losing side generally paying the winner's costs. Most employers, most of the time, do not litigate over a departing employee.

What they do instead is write letters. A solicitor's letter to you, or to your new employer, is cheap and often effective, because new employers can get cold feet even over a clause that would probably fail in court. The practical risk of an unenforceable covenant is not losing a lawsuit. It is losing an offer.

How enforcement actually plays out

1. A letter arrives, usually within days of your resignation or your new role becoming public. It sets out the clauses, asks you to confirm in writing that you will comply, and often goes to your new employer at the same time.

2. The employer asks for undertakings, meaning written promises to stay out for the restricted period. Most disputes end here, either with undertakings given, or with a narrower compromise agreed between the two employers.

3. If undertakings are refused, the employer can apply for an interim injunction, heard in weeks rather than months. Because a six-month restriction would be over before a full trial could take place, that hearing usually settles the outcome in practice, so courts look harder at the merits than they would in an ordinary interim application. The employer has to give a cross-undertaking in damages, which means compensating you if the restriction turns out to have been unenforceable.

4. Your new employer can be drawn in. A business that hires you knowing about the covenant can be sued for inducing a breach of contract, which is precisely why a letter to them is such an effective move.

Where the employer says you left with something more than yourself, a client list, a pricing file, a team, they may also seek a springboard injunction, which is an order aimed at removing an unfair head start rather than enforcing the covenant itself. Those turn on confidential information and your duties as an employee, not on whether the non-compete was reasonable.

If a solicitor's letter arrives

• Do not ignore it, and do not answer it the same day. Deadlines in these letters are the sender's choice, not the court's, and a considered reply a few days later costs you nothing.

• Find the signed contract and the date you signed it. Reasonableness is judged then, so the version in the handbook is not necessarily the version that binds you.

• Work out when the clock started and when it stops. Notice, garden leave and a payment in lieu all change the end date, and the restriction may be shorter than the letter claims.

• Leave the documents alone. Copying files, emailing yourself a client list or downloading a contacts export turns an arguable covenant dispute into a confidentiality claim, which is far easier for an employer to prove.

• Tell your new employer before the letter does. An offer usually survives a restriction that was explained in advance. It survives a surprise less often.

• Take advice quickly if an injunction is mentioned. These timescales are short, and an early hour with an employment solicitor costs far less than getting the first week wrong.

What to check before you sign

The cheapest moment to deal with a restrictive covenant is before you sign it. Employers expect questions at offer stage, and narrowing a covenant costs one email now instead of a legal argument later. Check:

• Which of the four covenants are present, and whether each has its own duration

• The definition of "competitor" or "restricted business": named companies are fine, whole industries are not

• The definition of the employer: does the clause protect the business you work in, or every company in the group?

• Duration against your seniority: query anything over six months for a non-executive role

• Geography: does it match where the business actually operates?

• Garden leave set-off: does time on garden leave reduce the restriction period?

• Client scope on non-solicit and non-dealing clauses: it should be limited to clients you personally dealt with, ideally within a defined recent period

• What triggers the restrictions: some clauses apply however the contract ends, including on redundancy, and the termination clause is where you find out

Restrictive covenants are one section of a bigger picture. Our guide to what to check in a UK employment contract before you sign covers the other clauses that deserve the same attention. And if the document in your inbox is still an offer letter, read what to know before uploading an offer letter to ChatGPT first.

How to narrow a restrictive covenant before you sign

Asking for a change is normal, and at offer stage you have more leverage than you will ever have again. The business has chosen you, and nobody wants to restart a hiring process over one clause. Keep the request short, specific and reasonable, because a redline of three sentences gets agreed far more often than a general objection to the whole section.

Three asks do most of the work:

1. Tie the client restrictions to clients you actually dealt with. Ask for the non-solicitation and non-dealing clauses to be limited to "clients with whom I personally dealt in the 12 months before termination". This is the change employers agree to most readily, because it still protects the connections they care about.

2. Shorten the period, and ask for garden leave to count. Six months instead of twelve is a normal request for a non-executive role. Pair it with a set-off: "any period spent on garden leave shall be deducted from the restricted period."

3. Narrow what counts as competing. Replace "any business competing with the Company" with "any business competing with those parts of the Company's business in which I was materially involved in the 12 months before termination", and ask for the group-company reference to come out unless you genuinely work across the group.

💡 Pro Tip: Put the request in the same email as your acceptance, framed around the job rather than the law. "I am delighted to accept. One small thing on clause 18: could we limit the client restriction to clients I have personally worked with?" reads as a professional signing a contract properly, not as someone planning their exit before day one.

If the employer refuses everything and the clause is wide, that refusal is information. It tells you how the business treats people on the way out, which is worth knowing before you resign from a job you already have.

How this differs in freelance contracts

Everything above assumes an employment contract. If you are a freelancer or contractor looking at restrictions in a service agreement, the analysis shifts: courts scrutinise freelance restrictions even more closely, because a freelancer typically gets nothing in exchange for them. No notice pay, no garden leave, no severance. A restriction that might be defensible against a salaried senior employee can fail entirely against a self-employed contractor, and freelance restrictions are drafted per client rather than per employer, which changes what "reasonable" looks like.

We cover that side fully in our guide to non-compete clauses in freelance contracts. If you are an employee, stay here; if you invoice your clients, that one is written for you.

Is the law changing? The proposed cap on non-competes

Not yet, but the direction of travel is worth knowing. The government published a working paper on reforming non-compete clauses in November 2025, with responses closing on 18 February 2026. The options set out in it ranged from a statutory cap on duration (three months is the figure most discussed), through a cap that varies with employer size or salary, to an outright ban.

As of September 2026, none of this is law. The consultation closed on 18 February 2026 and no government response has been published since. Any change needs primary legislation, no timetable has been announced, and the reform only targets non-competes, not the other three covenant types. A clause in front of you today is judged under the rules in this article, and a covenant you sign now is unlikely to be rewritten retrospectively even if a cap does arrive.

Restrictive covenants FAQ

Are non-compete clauses enforceable in the UK?

Yes, but only if they protect a legitimate business interest and go no further than reasonably necessary: tightly limited in duration, geography and scope, and applied to a role senior enough to justify it. Broad, long or industry-wide non-competes are likely to be void as a restraint of trade.

How long can a non-compete clause last in the UK?

There is no fixed legal limit, but the longer the clause, the harder it is to justify. Three to six months is the defensible range for most senior roles, 12 months is exceptional, and time spent on garden leave is expected to count towards it. Duration is always weighed together with scope and geography, not in isolation.

What is the difference between a non-compete and a non-solicitation clause?

A non-compete stops you working in a competing business at all. A non-solicitation clause only stops you approaching your former employer's clients, customers or staff, which leaves you free to take a job with a competitor as long as you keep away from those relationships. Non-solicitation clauses are much more likely to be enforced, because they protect a specific connection rather than blocking your whole career.

Does garden leave count towards my non-compete period?

Usually, and it should be spelled out. Well-drafted contracts include a set-off clause deducting any period of garden leave from the restricted period. Where there is no set-off, a court looking at a long period on garden leave followed by a full-length non-compete will assess the total time you are kept out of the market, and that total can tip an otherwise reasonable clause into being unreasonable.

What happens if I breach a restrictive covenant?

If the covenant is enforceable and your employer acts on it, they can seek an injunction stopping you, and damages for losses caused by the breach, with legal costs usually following the result. More commonly, they write to your new employer, which can put the offer at risk regardless of the clause's real strength. Assess the clause first, and take advice if a dispute is live.

Do restrictive covenants still apply if I am made redundant?

Usually, yes. Redundancy with proper notice does not by itself cancel post-termination restrictions. The position changes if your employer dismisses you in breach of contract, for example without the notice you are owed. A serious breach by the employer can release you from the restrictions altogether, a principle that goes back to General Billposting v Atkinson [1909] AC 118, on the basis that a business cannot break the bargain and still rely on it. That is a fact-specific argument for an adviser, not an assumption to rely on.

Can my employer add a restrictive covenant after I have started?

They can ask, but a new promise generally needs something in return to bind you. Where restrictions arrive with a promotion, a pay rise or a bonus, that is usually enough. Where you are simply asked to sign an updated contract or acknowledge a revised handbook with nothing offered, the employer's position is weaker, and it is reasonable to ask what you are receiving in exchange before you sign.

Am I bound by a covenant I felt pressured into signing?

Pressure on its own rarely gets you out of a covenant. Being told that a job depends on signing is not the kind of pressure the law treats as duress, and the bar for setting a contract aside on that basis is very high. The stronger arguments are the ordinary ones: whether the clause protects a legitimate interest, whether it goes further than necessary for the role you held when you signed, and what you received in return if it was added later.

Do I get paid during a non-compete period?

Not unless your contract says so. Unlike several European countries, UK law does not require an employer to pay you for the time a post-termination restriction keeps you out of work, and most contracts offer nothing. Garden leave is different, because you are still employed and still on full pay. That contrast is one reason courts look so carefully at long unpaid restrictions.

Can I take my LinkedIn contacts with me when I leave?

Handle this carefully, because it sits where confidentiality and non-solicitation overlap. Announcing a move to your whole network is not usually soliciting anyone. Messaging clients you served at your old employer to tell them where you have gone is much closer to the thing a non-solicitation clause exists to prevent, and exporting a client list or contact database before you leave is the kind of act that turns a covenant argument into a confidentiality claim. Check whether your contract says anything specific about business contacts and connections; many now do.

Know what your restrictions actually say before you rely on any of this

Most restrictive covenant problems are visible on the page long before they become disputes: a duration that does not fit the role, a "competitor" definition that swallows an industry, a group-company reference that quietly triples the reach of the clause. Reading your contract with the framework above gets you most of the way to knowing where you stand.

For the rest, get your employment contract reviewed against UK law with Ookulli. Every restriction is flagged with the specific clause and the UK law behind it, the analysis takes minutes rather than a solicitor's diary slot, and there is a 30-day money-back guarantee if you upgrade. Start free and see what your Restrictions section really commits you to, before you sign or before you hand in your notice.

This article is legal information, not legal advice. Restrictive covenant disputes turn on their specific facts, so if you are facing a live dispute or a solicitor's letter, speak to a qualified employment adviser.