He guested on The Saints' 1982 album, Out in the Jungle.

He also guested on Henry Cow's album, In Praise of Learning (1975).

The same year Williams guested on Magic Slim's album, Midnight Blues.

In 1997 Grand guested on Joe Louis Walker's album, Great Guitars.

She guested on Alberta Adams' 2008 album, Detroit is My Home.

Hillage also guested on Egg's 1974 album The Civil Surface.

He also guested on their 2006 live album Storms Over London Town.

She guested on Roots Manuva's first album, Brand New Second Hand.

He worked with country legend Lee Hazelwood and in return guested on his album Cake or Death.

In 1998 he guested on Sammy Hagar's album Marching To Mars.