My daughter has turned 16 so her premium bonds have now reverted to her, any wins have been sent to me.
Problem being she won in April and we wondered where the warrants would be sent. She had sent the form requesting it to go into her bank account. Ring today to be told the warrants have been sent to the last address on her record (moved 9 years ago), but they would send us a form which has to be verrified to our current address, so her address could be updated.
Luckily we rent the old house, so our tennant will send the envelope to us so she can bank them.