There is no house of the UK Parliament created exclusively to represent the working class.
Elected by universal adult suffrage (since 1928), it represents all constituents regardless of class, income, or occupation. MPs come from diverse backgrounds.
Unelected, historically hereditary/appointed. Reforms (1999, ongoing) reduced hereditary peers; most are now life peers appointed for expertise, not class representation.
Working-class representation is achieved through electoral politics (voting, unions, parties), not a dedicated parliamentary chamber.