The BUP is a political party with branches in all 3 countries that make up the British Isles. Its aim is to reunite the countries into a single entity as it was prior to the Revolutionary Wars. It is more popular in Great Britain then in Ireland where the BUP has to compete with the Orangist Party for votes. There are two factions within the party, the first wishes to return a king to the throne while the other would prefer to keep a commonwealth organisation.