Celts are a complete deadweight loss. They're poor, they're retarded, and they believe communism works. If they want an independent Celtic Federation where they can all congress together to talk about how much they hate England but love niggers, let them. "Good riddance" I'd say!
The Lowlands are ethnically Anglo-Saxon so England should keep them. Orkney and Shetland aren't Scottish at all and they'd rather be part of England. As for Ulster, England should retain at minimum County Down and Antrim.
I really fucking hate Catholicism btw.