List of Former countries in the British Isles in plain text you can copy and paste:
- Kingdom of Alba
- Angevin Empire
- Kingdom of Cat
- Kingdom of Ce
- Dál Riata
- Deira
- Dumnonia
- Eidyn
- Kingdom of England
- Fortriu
- Gododdin
- Rheged
- Roman Britain
- Scandinavian York
- Kingdom of Scotland
- Kingdom of Sussex