The UK does indeed have certain limitations on what a name can be.
Names that contain obscenities, numerals, misleading titles, or are impossible to pronounce are likely to be rejected by the Registering Officer, when registering a child.
There are no restrictions on adults assuming any new name, unless the purpose of the name change is fraudulent.
Does "accepting" a gift/ticket mean they used that ticket? What if someone accepted a ticket, put it on the form as a gift, but didn't use it? Or are they one and the same.