Bridget Phillipson tells Sky News the money paid for two events, but denies one ahead of her 40th was a birthday party.
The union plans to raise the issue at the Labour Party conference in Liverpool.
Sharon Graham says she wants Sir Keir Starmer to tell the country he is not embarking on "austerity mark two" ...
Data shows Ms Phillipson has received around £14,000 in gifts from Lord Alli, a Labour peer who is one of the party's largest ...