Henrietta Catherine Knight (b. 15 December 1946) is an English racehorse trainer. Henrietta is married to former champion jockey Terry Biddlecombe in 1995 and has no children. Henrietta began training under rules in 1989 having previously trained over 100 winners in point-to-points between 1984 to 1989 and trains the horses on a farm in Lockinge, near Wantage in Oxfordshire.
She is best known for training triple Cheltenham Gold Cup winner Best Mate and Queen Mother Champion Chase winner Edredon Bleu. Both horses also won the King George VI Chase and were owned by Jim Lewis and his late wife Valerie.
Among her current stable stars are Impek, who finished third in the Ryanair Chase at the 2006 Cheltenham Festival, and Racing Demon, the winner of the Peterborough Chase at Huntingdon Racecourse in 2006 and 2007.
Henrietta finished 12th at Badminton in 1973 and was the chairperson of the British Olympic Horse Trals Selection Committee between 1984 and 1988. This included the selection of the Silver Medal winning team for the Seoul Olympics.A keen writer, she has authored two books thus far. Chasing Gold, and Best Mate Triple Gold.
Big race victories: 1996 Glenlivet Hurdle (Aintree) Stompin, 1997 Stayers Hurdle (Cheltenham) Karshi, 1998-2001 4 Peterborough Chases (Huntingdon) Edredon Bleu, 1998 Grand Annual Chase (Cheltenham) Edredon Bleu, 2000 Lanzarote Hurdle (Kempton Park) Heart, 2000 Sun Alliance Chase (Cheltenham) Lord Noelie, 2000 Queen Mother Champion Chase (Cheltenham) Edredon Bleu, 2000 Martell Mersey Novices' Hurdle (Aintree) Best Mate, 2001 Scilly Isles Novices' Chase (Sandown Park) Best Mate, 2002 Peterborough Chase (Huntingdon) Best Mate, 2002 King George VI Chase (Kempton Park) Best Mate, 2002 Cheltenham Gold Cup Best Mate, 2003 Cheltenham Gold Cup Best Mate, 2003 Clonmel Oil Chase(Clonmel) Edredon Bleu, 2003 King George VI Chase (Kempton Park) Edredon Bleu, 2003 Ericsson Chase (Leopardstown) Best Mate, 2004 Cheltenham Gold Cup Best Mate, 2005 Peterborough Chase (Huntingdon) Impek, 2006 Peterborough Chase (Huntingdon) Racing Demon