- Yes, at any time (provided you have capacity)
- The procedure is to advise the Attorney that their authority is cancelled. To avoid claims that this was not done, it is best to serve a formal "Notice of Revocation" and register it at the Land and Property Information Office.
- If the Attorney does something under the Power of Attorney after notice of its revocation, this is fraud and they have committed a criminal offence.
- Of course, if you are unable to manage your own affairs through mental incapacity, you will not be able to cancel the power of attorney.