Roderick Williams is one of the most sought-after baritones of his generation with a wide repertoire spanning baroque to contemporary. He enjoys relationships with all the major UK and European opera houses also performs regularly with leading conductors and orchestras throughout the UK, Europe, North America and Australia. Festival appearances include the BBC Proms, Edinburgh, Cheltenham, Aldeburgh and Melbourne. As a recitalist he is in demand around the world and appears regularly at venues including the Wigmore Hall, Concertgebouw and Musikverein and at song festivals including Leeds Lieder, Oxford International Song and Ludlow English Song.

Roderick Williams was awarded an OBE in June 2017 and was Artist in Residence with the Royal Liverpool Philharmonic Orchestra from 2020–22, Artist in Residence at the 2023 Aldeburgh Festival and Singer in Residence at Music in the Round. He was also one of the featured soloists at the coronation of King Charles III in 2023.

As a composer he has had works premièred at Wigmore Hall, the Barbican, the Purcell Room and on national radio. In 2016 he won Best Choral Composition at the British Composer Awards and from 2022/23 he holds the position of Composer in Association of the BBC Singers.