A former teacher at a top private school has denied more allegations of sexual abuse.

Gary Dobbie, who used to work at Christ’s Hospital School in Horsham, West Sussex, was originally accused of 10 counts of indecent assault, one attempted indecent assault and two counts of indecency against men and women.

The 66-year-old pleaded not guilty to an additional charge of indecent assault of a man between November and December 2001 at a hearing at Brighton Crown Court on Tuesday.

Dobbie, of Albi in France and formerly of Hereford, is due to stand trial next month alongside another ex-teacher, James Husband.

The 68-year-old, of Wigginton in York, denies four counts of rape and five counts of indecently assaulting a woman.

The prosecution is part of a wider police investigation into separate allegations of abuse by other former teachers at the school.

Founded in the 16th century, Christ’s Hospital charges boarders up to £31,500 a year and counts Sir Barnes Wallis, inventor of the bouncing bomb, and poet Samuel Taylor Coleridge as alumni.

Pupils still wear a Tudor-style uniform consisting of a long blue coat and high yellow socks.