After collaborating on numerous albums for other artists, he recorded his first solo album, Sooner or Later, in 1999, 17 years after leaving Average White Band, which he released on his own record label, Sulphuric Records.
Apart from playing with his own group, the Hamish Stuart Band, and with his fellow Glaswegian guitarist and friend Jim Mullen, Stuart has also produced Gordon Haskell and the Swedish singer-songwriter Meja.
In 2006, Stuart toured as the bass player with Ringo Starr & His All-Starr Band. He joined Starr again for a 2008 tour, where he performed "Pick Up The Pieces" and "Work To Do."
In 2007, he produced and appeared as a guest vocalist on the album All About the Music, by The AllStars collective.
He is the curator, along with partner Claire Houlihan and friend Tom Sutton-Roberts, of the annual mOare Music festival, held in the village of Oare Faversham, Kent.