By Seamus Duff ITV host Ed Chamberlin was left red faced and forced to apologise when a horse racing pundit swore live on air. The 50-year-old host was left in a flap when 81-year-old racing journalist and broadcaster Brough Scott slipped up as the ITV cameras rolled. The pair were joined by two other commentators as the group reviewed all the highs, lows and dramatic moments of the races at Newmarket on Saturday. But Brough caused eyebrows to rise higher than the jumps horses were leaping over as he mixed up his words and ended up unleashing a swear word. The legendary broadcaster seemed well…