Simplify the following text for a Grade 13 native English-speaking person.
Original: The Conservative Party is a centre-right political party in the United Kingdom that adheres to the philosophies of conservatism and British unionism .
Simplified: The Conservative and Unionist Party ( usually shortened to Conservative Party , or informally as the Tory Party ) is the main centre-right political party in the United Kingdom . Their policies usually promote conservatism and British Unionism .