20-year-old Mhairi Black, who won the seat of Paisley and Renfrewshire South at the general election, is the youngest person in parliament and claimed other young people were being disadvantaged.

The Scottish National Party MP said she received housing support because of her job, but changes made in George Osborne’s Budget have eliminated this help for everyone else aged under 21.

“My housing [in London] is subsidised by the state … but in this budget the chancellor abolished any housing benefit for anyone under the age of 21,” she said.

“We are now in the ridiculous situation whereby, because I am an MP, not only am I the youngest, but I am also the only 20-year-old in the whole of the UK who the chancellor is prepared to help with housing.”

Black later called on the Labour party to join forced with the Scottish National Party and mount a more effective opposition to the government.

Other changes introduced by Osborne included a new measure which limits the tax relief given to landlords.