In UK law, at the close of the prosecution's case during a criminal trial, the defendant may submit to the judge or magistrate that there is no case for the defendant to answer. If the judge agrees, then the matter is dismissed and the defendant is acquitted without having to present any evidence in their defence. If the judge does not accept the submission, the case continues and the defendant must convince the jury of their innocence in order to be acquitted. Because a judge's refusal to uphold such a submission may potentially bias a jury's decision, a submission of No Case to Answer is usually heard in the absence of the jury.

General test

The general approach to be followed was described by Lord Lane CJ:

(1) If there is no evidence that the crime alleged has been committed by the defendant, there is no difficulty. The judge will of course stop the case. (2) The difficulty arises where there is some evidence but it is of a tenuous character, for example because of inherent weakness or vagueness or because it is inconsistent with other evidence. (a) Where the judge comes to the conclusion that the prosecution evidence, taken at its highest, is such that a jury properly directed could not properly convict upon it, it is his duty, upon a submission being made, to stop the case. (b) Where however the prosecution evidence is such that its strength or weakness depends on the view to be taken of a witness's reliability or other matters which are generally speaking within the province of the jury and where on one possible view of the facts there is evidence upon which a jury could properly come to the conclusion that the defendant is guilty, then the judge should allow the matter to be tried by the jury....

There will of course, as always in this branch of the law, be borderline cases. They can safely be left to the discretion of the judge.

In a trial in the Crown Court, a submission by counsel that there is no case to answer is heard in the absence of the jury. A submission may be made at the close of the prosecution case or at a later stage

Application in identification cases

When, in the judgment of the trial judge, the quality of the identifying evidence is poor, as for example when it depends solely on a fleeting glance or on a longer observation made in difficult conditions (for example, in bad weather, poor lighting or in a fast moving vehicle), the judge should withdraw the case from the jury and direct an acquittal unless there is other evidence which goes to support the correctness of the identification.

Application in confession cases

See MacKenzie (1992) 96 Cr App R 98.

Application where it is not clear which crime has been committed

Where it is clear that an accused has committed an offence but it is impossible to say which offence was committed, neither crime can be left to the jury.

Similarly, where it is possible to say that one defendant definitely committed a crime, but it is not possible to say which defendant and there is no evidence of joint enterprise, both must be acquitted.

Application where part of the evidence is silence

There may be no conviction based wholly on silence and the judge must withdraw a case from the jury if the only evidence tendered by the prosecution is the defendant's silence in interview.

Scotland

The procedure is governed by section 97 of the Criminal Procedure (Scotland) Act 1995, which states that:

(1) Immediately after the close of the evidence for the prosecution, the accused may intimate to the court his desire to make a submission that he has no case to answer both—
on an offence charged in the indictment; and
on any other offence of which he could be convicted under the indictment.

(2) If, after hearing both parties, the judge is satisfied that the evidence led by the prosecution is insufficient in law to justify the accused being convicted of the offence charged in respect of which the submission has been made or of such other offence as is mentioned, in relation to that offence, in paragraph (b) of subsection (1) above, he shall acquit him of the offence charged in respect of which the submission has been made and the trial shall proceed only in respect of any other offence charged in the indictment.

(3) If, after hearing both parties, the judge is not satisfied as is mentioned in subsection (2) above, he shall reject the submission and the trial shall proceed, with the accused entitled to give evidence and call witnesses, as if such submission had not been made.

(4) A submission under subsection (1) above shall be heard by the judge in the absence of the jury.