There is no obligation to act as an executor. It is up the discretion of the person who has been named as the executor to renounce the position. However, if the executor who wishes to be removed has acted in any relation to the administration of the estate, then a court order will be required in order for their removal. Generally, this will be made to the High Court under section 50 of the Administration of Justice Act 1985.
However, if the executor has not acted in any of the practicalities of the estate, then renunciation will be made via a deed of renunciation and will need to be signed in the presence of witnesses to be lodged with the Probate Registry.
Furthermore, if a person has been named to act as an executor prior to the person’s death, then the above will not apply, and simply saying ‘no’ is applicable, as there is no formal legal procedure. But, if the Will has already been prepared, then the individual named must go back to the testator, and have that part changed, and ask them to name somebody else as an executor.