Pomeroy's first big break was in the progressive rock band Genaside 2 in 1997. This led to him joining UK prog and electronic group
Archive, with which he contributed, bass, guitar and mellotron. Pomeroy has regularly performed with Rick Wakeman in the English Rock Ensemble. Commonly with guitarist
Dave Colquhoun with whom he was also a part of the band Moondigger with Colquhoun on lead vocals and guitar, Pomeroy on bass, keyboards and backing vocals and Michael Bowes on drums and backing vocals. Pomeroy was recruited by musical director
Mike Stevens to be part of the backing band for Take That when they reformed in 2005. Pomeroy played bass alongside Stevens, guitarist
Milton McDonald, drummer Donovan Hepburn, and keyboard players Bernie Smith and Marcus Byrne. Pomeroy joined
It Bites in 2006, recording albums with the band including
The Tall Ships. In the early 2000s, Pomeroy and
Adam Wakeman (son of Rick Wakeman), who he played with in Rick Wakeman's English Rock Ensemble, discussed forming a band. They were joined by vocalist
Damian Wilson, drummer Richard Brook and finally, in 2005, guitarist Pete Rinaldi. The new band,
Headspace, had their live debut in 2007, opening for
Ozzy Osbourne (in whose backing band Adam Wakeman played). Their debut release was 2007's EP
I Am.... Their first studio album,
I Am Anonymous, took until 2012 due to conflicting work and family pressures. Pomeroy performed bass and Chapman Stick on Steve Hackett's 2012 album
Genesis Revisited II. Pomeroy then went to perform bass, 12 string double neck, rhythm guitar and backing vocals on the Genesis Revisited tour. Performances at the Hammersmith Apollo and Royal Albert Hall were recorded in the live albums
Genesis Revisited: Live at Hammersmith and
Royal Albert Hall. After former ELO members Jeff Lynne and Richard Tandy performed a successful concert at the
Children In Need Rocks concert in 2013, with Mike Stevens as musical director, a request for ELO to reform caused Lynne to hire Stevens and the Take That backing band to perform at the
BBC Radio 2's
Hyde Park festival in 2014 with the
BBC Concert Orchestra. Pomeroy has performed bass and backing vocals live with Jeff Lynne's ELO since 2014 including both of their tours. Pomeroy was also a member of the pop group This Oceanic Feeling collaborators
Chris Braide (vocals, keyboards, guitars) and
Ash Soan (drums), they release one album called
Universal Mind which featured him on bass, chapman stick and guitar. Alongside Rick Wakeman, Pomeroy performed with Yes featuring Anderson, Rabin & Wakeman on bass guitar and backing vocals. Pomeroy played with ARW on both of their tours (except on the 2017 Japanese and 2018 European legs, where he was deputised by fellow Jeff Lynne's ELO touring member and
10cc singer Iain Hornal). In 2022, Pomeroy joined
Canterbury based progressive rock band
Caravan after playing as a guest bass player on their 2021 album
It’s None of Your Business. Pomeroy performed bass/vocals on the English Rock Ensemble spring 2022 tour with
Hayley Sanderson on vocals, Dave Colquhoun on guitars, backing vocals, and
Rick and
Adam Wakeman (keyboards). ==Style==