The figures, obtained by Frank Field, the MP for Birkenhead, show that just under half the total savings will come from the freezing of most working-age benefit levels since 2016, a policy which will deliver cuts of nearly £16bn.
• This article was amended on 24 September 2018 because an earlier version referred to Frank Field as a Labour MP. When he resigned the party whip, the Labour party reported that Field could no longer be a member. Field currently uses the title of independent Labour candidate.