[2] He has worked with acts including Radiohead, Portishead, Jeff Beck, Alison Moyet, Siouxsie Sioux, Roni Size, Hawkwind, Robert Plant and Reprazent.

The band leader, Dave Brock, later said Deamer was "too professional", and he was replaced with Danny Thompson Jr.[3] Deamer was the drummer of the rhythm and blues revival group Big Town Playboys and appeared on albums including Crazy Legs (1993) with Jeff Beck.

[8] In 2000, Deamer formed the jazz band Get the Blessing with Jim Barr (bass), Jake McMurchie (saxophone) and Pete Judge (trumpet), in Bristol.

[citation needed] Deamer worked with the French singer Damien Saez on the albums God Blesse / Katagena (2002),[10] Debbie (2004)[11] and Paris (2008).

[14] Deamer joined the rock band Radiohead as the second drummer on the tours for the albums The King of Limbs (2011) and A Moon Shaped Pool (2016).