Peter Tyndall Walwyn is a retired British racehorse

Horse racing

Horse racing is an equestrian sport that has a long history. Archaeological records indicate that horse racing occurred in ancient Babylon, Syria, and Egypt. Both chariot and mounted horse racing were events in the ancient Greek Olympics by 648 BC...

 trainer

Horse trainer

In horse racing, a trainer prepares a horse for races, with responsibility for exercising it, getting it race-ready and determining which races it should enter...

. He was based at stables at in the Lambourn

Lambourn

Lambourn is a large village and civil parish in the northwestern part of the ceremonial county of Berkshire in England. Its metropolitan district has a population of 4,017, and is most noted for its associations with British National Hunt racehorse training....

, Berkshire

Berkshire

Berkshire is a historic county in the South of England. It is also often referred to as the Royal County of Berkshire because of the presence of the royal residence of Windsor Castle in the county; this usage, which dates to the 19th century at least, was recognised by the Queen in 1957, and...

, area and enjoyed his period of greatest success in the mid 1970s when he was British flat racing Champion Trainer

British flat racing Champion Trainer

The Champion Trainer of flat racing in Great Britain is the trainer whose horses have won the most prize money during a season. The list below shows the Champion Trainer for each year since 1896.-----See also:* British flat racing Champion Jockey...

 twice.

Walwyn comes from a racing family - he is the cousin of trainer Fulke Walwyn

Fulke Walwyn

Fulke Thomas Tyndall Walwyn was a British jockey and racehorse trainer specialising mainly in National Hunt racing. He was born in Wrexham and died in Newbury.He was educated at Malvern College....

. He was educated at Charterhouse School

Charterhouse School

Charterhouse School, originally The Hospital of King James and Thomas Sutton in Charterhouse, or more simply Charterhouse or House, is an English collegiate independent boarding school situated at Godalming in Surrey.Founded by Thomas Sutton in London in 1611 on the site of the old Carthusian...

 and his first job in racing was as assistant to trainer Geoffrey Brooke. In October 1960 he took out a licence to train and in 1965 he moved to the stables at Seven Barrows

Seven Barrows

thumb|300px|right|A view of four of the barrowsSeven Barrows, situated just North of Lambourn, Berkshire, England, is a site of a Bronze Age cemetery. Excavators have found that one grave alone contained the cremated remains of 100 individuals dating from 2200 BC. The site lies along the Lambourn...

 where he spent the majority of his career. Towards the end of his career he moved to Windsor House stables in Lambourn. His principal stable jockeys were Duncan Keith, Pat Eddery

Pat Eddery

Patrick James John "Pat" Eddery is a former flat racing jockey. Pat's father Jimmy Eddery was a jockey, as is his brother Paul Eddery.-Career:...

 and Joe Mercer

Joe Mercer (jockey)

Joseph Mercer is a retired English Thoroughbred race horse jockey. He was active as a jockey from 1947 to 1985 and rode a total of 2,810 winners in Britain, a figure exceeded only by Sir Gordon Richards, Lester Piggott and Doug Smith at the time of Mercer’s retirement, and subsequently only...

.

He was one of the leading trainers in Britain during the 1970s, winning the Champion Trainer title in both 1974 and 1975. The most notable horse he trained was Grundy

Grundy (horse)

Grundy was an Irish-bred, British-trained Thoroughbred Champion racehorse. He was a leading two-year-old in 1974 and went on to win the Epsom Derby in 1975...

, winner of the Epsom Derby

Epsom Derby

The Derby Stakes, popularly known as The Derby, internationally as the Epsom Derby, and under its present sponsor as the Investec Derby, is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred colts and fillies...

, Irish Derby and King George VI and Queen Elizabeth Stakes in 1975.

He retired as a trainer in 1999 but remains involved in horse racing organisations, and as at February 2011 is Chairman of the Lambourn Trainers Association. He was elected to honorary membership of the Jockey Club

Jockey Club

The Jockey Club is the largest commercial organisation in British horseracing. Although no longer responsible for the governance and regulation of the sport, it owns 14 of Britain's famous racecourses, including Aintree, Cheltenham and Newmarket, amongst other concerns such as the National Stud and...

 on his retirement.

British Classic wins

• 1,000 Guineas - (1) - Humble Duty (1970)
• Epsom Oaks
  Epsom Oaks
  The Oaks Stakes is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred fillies. It is run at Epsom Downs over a distance of 1 mile, 4 furlongs and 10 yards , and it is scheduled to take place each year in early June....
  
   - (1) - Polygamy (1974)
• Epsom Derby
  Epsom Derby
  The Derby Stakes, popularly known as The Derby, internationally as the Epsom Derby, and under its present sponsor as the Investec Derby, is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred colts and fillies...
  
  - (1) - Grundy (1975)