united kingdom

Hello, With a Statutory Declaration (and not a Deed Poll) to change one's name, can you please tell me if it requires just your new signature (for your new name)... or... if it needs to be signed with both your new signature and your old signature (for your former name)? I'm asking because...

My father has recently passed away. He was operating a retail business from leased premises for which the lease has lapsed and he was on a rolling contract. during his illness he was unable to pay the rent, the landlord has issued a notice of forfeiture. We did not receive any notification...