Can You Appeal After Pleading Guilty?

Yes, you can appeal a Crown Court conviction even if you pleaded guilty. But the grounds are narrow, and simply changing your mind is not one of them.

The short answer

The Court of Appeal publishes its own guide for people appealing without a lawyer. It says plainly that you can appeal a conviction whether you pleaded guilty or were convicted by a jury.

The test is the same either way. By law, the Court of Appeal must allow an appeal against conviction "if they think that the conviction is unsafe", and must dismiss it "in any other case". That is section 2(1) of the Criminal Appeal Act 1968, and it is still the test in force today.

"Unsafe" means there is something wrong with the conviction itself. It does not mean you now regret the plea, or that the case feels unfair in hindsight.

Why a guilty plea makes it harder

When you plead guilty in the Crown Court, you admit the offence in open court. The court treats that admission as powerful evidence that the conviction is sound.

In 2022, in a case called R v Tredget, the Court of Appeal confirmed that it can still hear an appeal after a guilty plea. The fact that you were fit to plead, knew what you were doing, meant to plead guilty, and did so without hesitation after expert legal advice does not by itself stop the court from hearing your application.

But the same judgment made the reality clear. Where someone wants to rely on fresh evidence after an unequivocal guilty plea, the court said the circumstances in which that can succeed will be "very rare".

So the question is not "do I still think I was guilty?" It is "was there something wrong in law with the way this conviction came about?"

The Court of Appeal's guide for applicants gives one example of the kind of complaint that can work: you pleaded guilty because your lawyer told you something that was wrong in law.

Before you are sentenced: asking to vacate the plea

If you have pleaded guilty but have not yet been sentenced, there is a different and usually better route. You can ask the Crown Court to let you withdraw the plea. The legal word for this is to "vacate" it.

Rule 25.5 of the Criminal Procedure Rules 2025 sets out how it works. The application must be in writing. It must be made as soon as practicable after you become aware of the grounds, and in any event before the case is finally disposed of, which in practice means before you are sentenced. It must be served on the court officer and on the prosecutor.

The application has to explain why it would be unjust for the guilty plea to remain unchanged. It must also indicate any evidence you want to call, identify any proposed witness, and state whether you are waiving legal professional privilege. Legal professional privilege is the confidentiality that covers what you and your lawyer said to each other. If your complaint is about the advice you were given, that confidentiality normally has to be waived so the court can see what actually happened.

Once you have been sentenced, this route closes. The only way after that is the Court of Appeal.

After sentence: appealing to the Court of Appeal

The 28-day limit

You have 28 days. For an appeal against conviction, time runs from the date of the verdict or finding. For an appeal against sentence, it runs from the date sentence was passed.

If you are already out of time, you can ask for an extension on the appeal form (Form NG) and must set out your reasons. Applications do fail at this stage where there is no good reason for the delay.

Permission, and the single judge

Almost every appeal needs permission, which the courts call "leave". The main exceptions are where the trial or sentencing judge certifies the case as fit for appeal, and where the Criminal Cases Review Commission has referred the case.

A single judge reads the papers and decides whether your grounds are arguable. That judge can grant permission, grant it on some grounds only, refuse it, or refer the case to the full court.

If permission is refused, you can renew the application. The renewal notice must be served on the Registrar within 14 days of you being notified, and the application lapses after 28 days if nothing is served. A renewal is decided by two or three judges.

If permission is granted, a representation order is usually granted with it, which funds a barrister for the appeal. There is no right to public funding at the renewal stage.

Loss of time orders

This is the part nobody explains properly, and it matters.

If the court concludes that an application was wholly without merit, it can order that time spent in custody since the application was lodged does not count towards the sentence. In plain terms, you serve longer.

Current practice is not to make these orders at the single judge stage. The risk arises if a wholly meritless application is renewed to the full court. The Court of Appeal's guide is blunt on one point: renewing on a lawyer's advice does not protect you from such an order.

A loss of time order cannot be made where permission or a trial judge's certificate has been granted, on a Commission referral, or where the application was abandoned.

Appealing the sentence is a separate question

Your plea does not limit your right to appeal the sentence. You can appeal a Crown Court sentence whatever your plea was.

One of the grounds the Court of Appeal's own guide lists is that you were not given enough credit for pleading guilty.

So if your real complaint is that the sentence is too long, that is an appeal against sentence, not against conviction. It is a different argument, and a far more common one.

If the Court of Appeal has already said no

If the court has heard your appeal and dismissed it, that decision is final. But matters you did not raise can be taken to the Criminal Cases Review Commission, which can investigate a case and, in some circumstances, refer a conviction or sentence back to the Court of Appeal.

What this means for you

If you are waiting to be sentenced and you believe you pleaded guilty for the wrong reasons, this is the moment that matters most. The application to vacate a plea has to be made before the case is finally disposed of, and it has to be in writing with reasons. Speak to a solicitor now rather than after sentencing.

If you have already been sentenced, be honest with yourself about which thing you are challenging. A complaint about the length of the sentence is a sentence appeal. A complaint that the conviction should never have happened is a conviction appeal, and after a guilty plea that needs a specific legal defect, not a change of heart.

If you are outside the 28 days, you are not automatically shut out, but you will need a real reason for the delay, and the court looks at that first.

And know the downside. A hopeless application renewed to the full court can cost you time off your sentence. That is exactly why it is worth having someone read the papers properly before you lodge anything.

Have someone read the papers first

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This article is general information about the law in England and Wales. It is not legal advice on any individual case, and Case Review UK is not a firm of solicitors and does not replace one.