He held various church posts and ran a small opera company, sang ad hoc with the BBC Singers, and played at the main London music venues.
Williams continues to teach and work in Aberdeen where he has enjoyed a long association with the Haddo House Choral & Operatic Society[3] and the North East of Scotland Music School.
[5][6] For the first 15 years of his appointment in Scotland, Williams also held the post of Organist at the Church of Our Lady of Victories, Kensington High Street where he advised on the rebuilding of an 1870s Willis organ.
[7] Among the new organ music pieces Williams has commissioned are John McLeod's The King’s Toccata; Timothy Raymond's Nocturne; Peter Relph's Les Anges Encerclant; Sofia Gubaidulina's Hell und Dunkel; Stephen Montagu's Behold, A Pale Horse; Claire Singer's A FÀS SOILLEIR; Pete Stollery's b3:dz; and Joe Stollery's A Squabble of Mews.
He continues to perform across Aberdeenshire, to direct ensembles including the Aberdeen Diocesan Choir and undertaking further academic research on the music collections of Scottish castles and country houses.