What constitutes a valid will in the UK?

A valid will in the UK must be in writing and signed by the testator or by someone else at their direction and in their presence. It must be witnessed by two independent adults who sign the will in the presence of the testator. The testator must have the mental capacity to understand the nature of making a will and the extent of their estate. They should also be free from any undue influence. These requirements ensure the will is legally enforceable and that the testator’s wishes are honoured after death.