London Employment Solicitors: UK Unfair Dismissal Claims Explained

London employment solicitors hear the same story constantly: someone gets called into a meeting, handed a letter, and walked out the door with no real explanation. If that sounds familiar, you’re probably here because you’re wondering whether what happened to you was actually legal. It might not have been.

Unfair dismissal is one of the most misunderstood areas of UK employment law, partly because people assume “unfair” means the same thing legally as it does in everyday conversation. It doesn’t. A dismissal can feel completely unjust and still be lawful, or it can look procedurally tidy on paper and still fall apart the moment a tribunal looks closely at it. The difference usually comes down to a handful of legal tests: whether your employer had a genuine, fair reason to let you go, whether they followed a reasonable process, and whether they treated you the way a reasonable employer would have in the same situation.

This guide walks through what unfair dismissal actually means under the Employment Rights Act 1996, who qualifies to bring a claim, how much compensation is realistically available in 2026, and the strict deadlines that catch out far too many employees who wait too long to act. Whether you’re weighing up a settlement offer or trying to figure out if you even have a case, this should give you a clear, honest starting point before you speak to a solicitor.

1. What Counts as Unfair Dismissal Under UK Law

Under the Employment Rights Act 1996, every dismissal has to be justified by a fair reason and carried out through a fair process. If either piece is missing, an employee may have grounds for an unfair dismissal claim.

The law recognises five potentially fair reasons for dismissal:

• Conduct – such as misconduct, gross misconduct, or repeated breaches of company policy
• Capability – poor performance, ill health, or lack of qualifications for the role
• Redundancy – where the job itself genuinely no longer exists
• Illegality – continuing to employ the person would break the law (for example, a lost visa or driving licence needed for the job)
• Some other substantial reason (SOSR) – a catch-all category, often used for business reorganisations or irreparable breakdowns in working relationships

If your employer can’t point to one of these five reasons, or if the reason given doesn’t stand up to scrutiny, the dismissal is likely to be unfair regardless of how the process was handled.

Automatically Unfair Reasons

Certain dismissals are treated as automatically unfair, which means the tribunal doesn’t need to weigh up reasonableness at all. These include dismissals connected to:

• Pregnancy, maternity, or family leave
• Whistleblowing (making a protected disclosure)
• Asserting a statutory employment right
• Trade union membership or activities
• Requesting flexible working in certain circumstances

Crucially, several of these categories don’t require any minimum length of service, which brings us to the qualifying period.

The Two-Year Qualifying Period (and Its Exceptions)

For most employees, you currently need at least two years of continuous employment with the same employer to bring an ordinary unfair dismissal claim. This is one of the first things any employment solicitor will check, because it’s a hard eligibility bar, not a factor a tribunal weighs up.

There are important exceptions. If your dismissal falls into one of the automatically unfair categories above, you don’t need two years’ service, you can bring a claim from day one. This trips up a lot of people who assume they have no case simply because they were recently hired.

It’s also worth knowing that this landscape is shifting. Under the Employment Rights Act 2025, the government has committed to reducing the two-year qualifying period substantially, alongside removing the current cap on compensatory awards. Those changes are expected to commence from 1 January 2027, so anyone dismissed before that date is still assessed under the existing two-year rule.

2. Fair vs Unfair: How Employment Tribunals Actually Decide

Even where an employer has a genuine, fair reason to dismiss someone, the tribunal still asks a second question: did they act reasonably in treating that reason as sufficient to dismiss?

This is where procedure matters enormously. A tribunal will typically look at:

• Whether a proper investigation took place before any decision was made
• Whether the employee was told what they were accused of and given a chance to respond
• Whether the employee could bring a colleague or union representative to any meeting
• Whether the employer followed its own disciplinary or capability policy
• Whether the employee had a genuine right of appeal
• Whether dismissal fell within the “range of reasonable responses” a reasonable employer might have taken, rather than the harshest option available

That last point is a genuinely important legal test. Tribunals aren’t there to decide what they personally would have done. They’re checking whether the employer’s decision was one that a reasonable employer, acting reasonably, could have reached. It’s a deliberately generous standard for employers, which is exactly why procedural failures are so often where claims succeed.

Failing to Follow the ACAS Code

Employers are expected to follow the ACAS Code of Practice on Disciplinary and Grievance Procedures. A serious or unreasonable failure to do so won’t automatically make a dismissal unfair, but it can push a fair-looking case over the line, and it allows a tribunal to increase any compensation awarded by up to 25%. You can read the full code on the ACAS website, which sets out the minimum standards employers are expected to meet.

3. Unfair Dismissal vs Wrongful Dismissal vs Constructive Dismissal

These three terms get used interchangeably by people who’ve just lost their jobs, but they’re legally distinct, and mixing them up can cost you time and money.

Claim type	What it actually is	Where it’s heard
Unfair dismissal	A statutory claim about whether the reason and process behind your dismissal were fair	Employment tribunal
Wrongful dismissal	A breach of contract claim, usually about not being given proper notice or notice pay	Employment tribunal or civil courts
Constructive dismissal	Resigning in response to your employer’s fundamental breach of contract, then arguing you were effectively forced out	Employment tribunal

It’s entirely possible to bring more than one of these claims at once. Someone dismissed without notice, for a reason that wasn’t genuinely fair, following no real process, could potentially claim unfair dismissal and wrongful dismissal in the same case. A solicitor experienced in UK unfair dismissal claims will usually assess all three angles before advising you on how to proceed.

4. How Much Compensation Can You Claim? (2026 Figures)

This is usually the first question people ask, and understandably so. Compensation for a successful unfair dismissal claim is made up of two separate elements.

The Basic Award

The basic award is calculated using a fixed formula based on your age, length of service, and weekly pay (capped at a statutory limit). It works in a similar way to statutory redundancy pay. As of 6 April 2026, the maximum basic award is £22,530, based on a capped week’s pay figure that also rose this year.

The Compensatory Award

The compensatory award covers your actual financial losses arising from the dismissal, things like lost earnings, lost pension contributions, and lost benefits, up to a statutory ceiling. Following the annual uprating that took effect on 6 April 2026, the maximum compensatory award for ordinary unfair dismissal rose to £123,543, or 52 weeks’ gross pay, whichever is lower.

In practice, most awards fall well below the maximum. Tribunals only compensate losses you can actually evidence, and they expect claimants to have made reasonable efforts to find new work (this is known as the duty to mitigate loss).

A few things that can adjust the final figure:

• Uplift of up to 25% if the employer unreasonably failed to follow the ACAS Code
• Reduction for contributory conduct, if you did something that contributed to your own dismissal
• Reduction under Polkey principles, if a fair process would likely have led to dismissal anyway, even if the actual process was flawed

Upcoming Changes Under the Employment Rights Act 2025

This is genuinely worth knowing if your dismissal is recent or upcoming. The Employment Rights Act 2025, which received Royal Assent in December 2025, will remove the statutory cap on compensatory awards for unfair dismissal entirely. The government intends to bring this change into force from 1 January 2027, alongside a reduction to the current two-year qualifying period. Until then, the existing caps described above continue to apply based on your effective date of termination, not the date you file your claim. Full detail on the reforms is available directly from GOV.UK’s summary of the unfair dismissal changes.

5. Strict Time Limits: Don’t Miss Your Window

This is where good cases die needlessly. You generally have three months less one day from your effective date of termination to start the tribunal claims process. Miss it, and in most cases your claim simply won’t be allowed to proceed, no matter how strong it is.

ACAS Early Conciliation

Before you can lodge an unfair dismissal claim, you’re required to notify ACAS and go through Early Conciliation. This is a free, confidential process where an ACAS conciliator tries to help you and your employer reach a settlement without going to tribunal. It pauses the three-month clock while it’s ongoing, but it doesn’t extend your overall deadline indefinitely, so it’s not something to leave until the last minute.

Realistically, if you think you’ve been unfairly dismissed, the smart move is to speak to a solicitor within days or weeks, not months. Evidence gets harder to gather, memories fade, and you lose valuable time to negotiate a settlement before things escalate.

6. The Employment Tribunal Process Step by Step

Most people have never been near an employment tribunal and understandably find the process intimidating. Broadly, it looks like this:

1. Early conciliation – Notify ACAS and attempt settlement
2. ET1 claim form – Submit your formal claim to the employment tribunal
3. ET3 response – Your employer files their defence
4. Case management – The tribunal sets out timetables, disclosure requirements, and witness statement deadlines
5. Disclosure and evidence exchange – Both sides share relevant documents
6. Witness statements – Written evidence prepared and exchanged in advance
7. Final hearing – Both sides give evidence, are cross-examined, and the tribunal reaches a judgment
8. Remedy hearing – If you win, a separate hearing (or the same one) decides compensation

Many cases settle before ever reaching a final hearing. Employers are often keen to avoid the cost, management time, and reputational exposure of a public tribunal, which is why a well-prepared claim frequently results in a negotiated settlement agreement rather than a full trial.

7. Why Work With London Employment Solicitors

London’s employment tribunals deal with an enormous volume of claims across every sector, from financial services to retail, and the procedural rules are applied strictly. Having London employment solicitors who appear regularly before these tribunals matters, because they know how judges in this region tend to approach borderline cases, what evidence tends to land well, and where employers commonly cut corners.

A good employment solicitor will typically:

• Assess whether you meet the qualifying service requirement or fall within an exception
• Identify every viable claim (unfair dismissal, wrongful dismissal, discrimination, or otherwise)
• Calculate a realistic compensation range rather than an inflated headline figure
• Handle ACAS Early Conciliation and settlement negotiations on your behalf
• Prepare and present your case if it proceeds to a full tribunal hearing

No Win No Fee Arrangements

Many London employment solicitors offer no win no fee arrangements for unfair dismissal claims, particularly where the case has strong prospects of success. This removes much of the financial risk of pursuing a claim, though it’s worth asking any firm exactly what percentage they take from a successful award, and what happens if the case is lost, before signing anything.

8. How to Start Your Unfair Dismissal Claim

If you think you’ve been unfairly dismissed, a sensible first move looks like this:

• Gather your paperwork – contract, dismissal letter, disciplinary records, appraisal history, and any relevant emails or messages
• Write down a timeline – while it’s fresh, note dates, meetings, and who said what
• Check your qualifying service – work out your exact start and end dates
• Contact ACAS or a solicitor promptly – don’t let the three-month clock run down before you’ve even had advice
• Get a clear view on value – ask for a realistic compensation estimate, not just a best-case scenario

Employment law can move quickly once a claim is underway, and the strongest cases are usually the ones where evidence was gathered early, not reconstructed months later from memory.

Conclusion

Unfair dismissal law exists to strike a balance between an employer’s right to manage their business and an employee’s right not to be dismissed without a fair reason or a fair process, and getting that balance right in any individual case usually comes down to detail: your length of service, the reason given, whether procedure was followed, and how much you can actually evidence in lost earnings.

With the maximum compensatory award now standing at £123,543 following the April 2026 increase, and bigger changes still coming under the Employment Rights Act 2025, this is an area where the rules genuinely do shift year to year. If you believe you’ve been dismissed unfairly, the most valuable thing you can do is act quickly, within the strict three-month-less-one-day time limit, and get a clear, honest assessment of your case from experienced London employment solicitors before that window closes.