He has worked with a wide range of artists and bands, including Nik Kershaw, Pink Floyd, 10cc, Il Divo, Westlife, Girls Aloud, Atomic Kitten, Paul Carrack, Dusty Springfield, Bonnie Tyler, Mike Rutherford, Mike + The Mechanics, Spice Girls, All Saints, Tom Jones, Jean-Michel Jarre, Helene Fischer and Schiller.

[9] In the mid to late eighties, Wallis was drummer for the Krew, the backing band for Nik Kershaw (Riddle and Radio Musicola tours) and Chris Farlowe (1988).

[10][11] It was at a Kershaw concert where his energetic playing and elaborate percussion set-up drew the attention of key Pink Floyd musicians to Gary Wallis.

Instead of sitting down to play Gary was working in a kind of cage stuffed full of percussion, some pieces of which were mounted so high that a three-foot leap was needed to strike the required object.

With his obvious musical skills this additional showmanship seemed an ideal bonus for a stage that looked initially as though it might be occupied by the living dead.

"[14] Wallis was invited to join Pink Floyd, playing on their A Momentary Lapse of Reason Tour (which was released as Delicate Sound of Thunder in 1988).

Blake (2008, p. 328) describes Wallis's playing as a "highly visual performing style – attacking an array of gongs, drums and cymbals mounted around him in a cage – was the perfect contrast to Mason's considerably more restrained approach.

[19] Spinal Tap is known for its succession of drummers who "they claim died under odd circumstances", and Wallis was shown "exploding" at the end of the performance.

He went on to perform with them on The Division Bell world tour, during the European leg of which Pink Floyd recorded the Pulse live album and video, with Wallis playing percussion.

[26] Gary Wallis performed in front of a crowd of 50,000 with French musician Jean-Michel Jarre at a 12-hour The Twelve Dreams of the Sun concert at the Giza pyramids on New Year's Eve 1999/2000.

[28][29] Wallis has collaborated on various tours and concert events over two decades with legendary Welsh singer Sir Tom Jones, as his drummer and musical director, including residencies in Las Vegas.

[31] Other band members on the 2011 tour were: Davide Bronze (bass guitar); Jamie Moses (guitar); Toby Chapman (keyboard); Lutz Rainer Krajenski (keyboard); Laura Critchley (backing vocals); Sophie Hiller (backing vocals); Francis Samuel Walden (saxophone) and Trevor Mires (trombone).

[33] In 2003, a comeback of the band was announced by Rutherford, and Wallis performed in their concert at Shepherd's Bush Empire in London, which was filmed and released as a live DVD by Eagle Rock Entertainment.

[40] Wallis contributes drums to Schiller upcoming album "Morgenstund" and is expected to follow Christopher von Deylen on the next live tour in 2019.

Together with long-term colleague Toby Chapman, Wallis has co-produced tracks for artists such as Paul Carrack (1996), Belinda Carlisle (1997), Rod Stewart (2000), Cher (2001), Swedish band Addis Black Widow (2001), and Zididada, a Danish act signed to Universal Denmark (2003).

In the Roland UK interview with Ben Stone, Wallis explains his own approach to drumming: "There's nothing you would call real 'drummer's drummer', cause, you know, that's not my thing.

Stone then asked Wallis about the importance of this aspect of playing in the current musical climate, with so many drum clinics taking place.