Lee Gary Kerslake (16 April 1947[1] – 19 September 2020) was an English musician, best known as the longtime drummer and backing vocalist for the rock band Uriah Heep and for his work with Ozzy Osbourne in the early 1980s.

On the Firefly album he was credited as Lee "The Bear" Kerslake, the nickname being a reference to his beard growth and overall solid physical build.

In 1980, Kerslake met ex-Black Sabbath vocalist Ozzy Osbourne by chance in a lift at the Kings Cross Hotel in Australia.

"[5] In 1998, Kerslake and Daisley filed a joint lawsuit against Osbourne and his wife/manager Sharon, seeking royalties and songwriting credits for their contributions to the Blizzard of Ozz and Diary of a Madman albums.

The Osbourne camp responded by removing Kerslake and Daisley's performances from the 2002 reissues of both albums and having them re-recorded by bassist Robert Trujillo and drummer Mike Bordin.

[6] Entertainment attorney Steven Machat, who was involved in the deal Osbourne signed with Jet Records, said in his 2011 book Gods, Gangsters and Honour: A Rock 'n' Roll Odyssey that Sharon was not happy with the level of creative input that Daisley and Kerslake had in the band and wanted Ozzy to have full control.

"[8] In 2003, Kerslake became involved in super group Living Loud, a hard rock project also featuring bassist Bob Daisley, guitarist Steve Morse and singer Jimmy Barnes.

In 2016 Lee teamed up with Tayla Goodman from London Bridge films, whom he met while dog-walking in Crystal Palace park and together with Pyrojunkies' Shane Cauldwell, they produced a music video for his solo album Celia Seanna.

The documentary will feature Ian Paice from Deep Purple, Joe Elliott from Def Leppard, Mick Box from Uriah Heep, Nicko McBrain from Iron Maiden, and Gene Simmons from Kiss.

[11] On 14 December 2018, Kerslake joined Uriah Heep onstage at the Shepherd's Bush Empire, contributing percussion and vocals to "Lady in Black".