In 1990, he joined London's Capital Radio to present the Weekend Breakfast Show, which remained his domain for three years.
He often stood in as holiday relief for Chris Tarrant, and he also hosted The Rebel Yell Rock Machine, which was syndicated across the nation's airwaves every week.
In January 2020, Williams began hosting the weekday morning show 10–1pm on London’s DAB station, Nation Radio UK.
Then in 2001, he was the event commentator on the Channel 5 sports show Under Pressure which lasted one series and ten episodes.
During ITV's broadcasting of Premier League football coverage from 2001 to 2004, Williams was part of the team, commentating on edited matches and goal highlights.