The original intention was for Power Quest to be entirely based in Southampton, but other than guitarist Adam Bickers, no other interested musicians in the city could be found.

For the second guitar slot, they managed to secure the services of their former DragonHeart bandmate Sam Totman, at least in a short-term capacity as his commitment lay with his own band.

His place was filled on the tour by Last Hours of Torment drummer Gavin Ward, and eventually on a more permanent basis by Francesco Tresca.

In August 2006, Power Quest announced that current Garavello would be taking up a second role as rhythm guitarist, as the band had been without a second guitar player since Bickers' departure in 2003.

In December 2007, Williams announced on the Official Power Quest forums that there would be five guest appearances on the forthcoming album, Master of Illusion.

The first of these was announced as guitarist Bill Hudson from North American power metal band Cellador, who would be providing guest instrumentation on the track "The Vigil".

The second of these was announced as keyboardist Richard West from British progressive metal band Threshold, who would be providing a keyboard solo on the track "Human Machine".

In June 2008, in a press release, the band announced that Hudson, who had previously contributed to the Master of Illusion album on the track "The Vigil", had joined as joint lead guitarist alongside Martongelli.

This lineup consisted of Pete Morten on vocals (vocalist for My Soliloquy, Metalloid, and Nightmare World and touring guitarist for Threshold), Andy Midgley on guitar (guitarist for female-fronted prog/symphonic metal band Liquid Sky), Ben Randall on guitars (winner of the 2008 'Most Promising Young Guitarist Award' at the international Guitar Idol competition), Paul Finnie on bass (ex-stage manager for Power Quest and former bassist of post-punk band the Wake), and Rich Smith on drums (touring drummer with Vader, Dark Funeral, Old Man's Child, Green Carnation and the Blood Divine also ex member of Thunder Force and electro-rock/industrial band Aphemia).

Following a few gigs with the new line-up, it was then announced on 15 March 2010, the sudden departure of front man Morten and guitarist Randall due to musical differences.

After a three-year hiatus whilst working with Eden's Curse, Williams announced that Power Quest had reformed, and a new EP, Face the Raven was released on 10 September 2016,[10] the same day as their performance at Camden Underworld.

On 29 June, a year before Finnie and Kopczyk's departure, the band announced a new album entitled The Sixth Dimension and would support DragonForce as special guests on the UK leg for the Reaching Into Infinity World Tour.