Rachel Riley has claimed a Countdown fan was banned from the show's set after groping her.The presenter, 35, said in an interview that she was introduced to the male fan by his wife backstage at the Channel 4 show and that the couple were not allowed back into the audience after she reported him. She told The Sun: "This married couple came up to me and the lady said ‘oh my husband really likes watching you, do you mind if we just…’ and he squeezed my a**e.