He was, from the 1950s until his retirement in 1980,[3] the voice of show jumping on British television,[4] succeeded by Raymond Brooks-Ward who broadcast with Williams from 1956.
[7] In addition to his TV work he was also an author, writing the Wendy series which were aimed at children and could be termed "traditional pony books".
[8] He also wrote two adult horse novels and several works of non fiction concerning show jumping and equestrianism in general.
[9] He was Chairman of the British Horse Society, and instrumental in setting up a National Equestrian Centre at Stoneleigh Abbey in Warwickshire.
In 2005, he was one of the inaugural laureates appointed to The British Horse Society Equestrian Hall of Fame.