Subkitten Line Up : Sarah Sheil [Keyboards], Ashley Sheil [Guitar, Bass Guitar & Vocals], Grainne Donohue [Bass Guitar & Guitar]

This was an early line up of Estel which existed for a short period in 1997
Estel [Mark 1] Line Up : Sarah Shiei [Keyboards], Ashley Sheil [Guitar, Bass Guitar & Vocals], Grainne Donohue [Bass Guitar & Guitar]

The band played a couple of gigs with this lineup.
Sir Killalot Line Up : Liam Mulhall [Guitar], Andrew Bushe [Drums], Richie Egan [Guitar], Steven Anderson [Guitar]
Estel [Mark 2] Line Up : Sarah Sheil [Keyboards], Ashley Sheil [Guitar, Bass Guitar & Vocals], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums]

After seeing the band play live, Andrew Bushe agreed to join on drums
Estel [Mark 3] Line Up : Sarah Sheil [Keyboards], Ashley Sheil [Guitar, Bass Guitar & Vocals], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar], Michael Sheil [Guitar]

The line up briefly expanded when Michael Sheil joined the band (he had filled in for Grainne while she travelled in America and was then kept on).
Estel [Mark 4] Line Up : Sarah Sheil [Keyboards], Ashley Sheil [Guitar, Bass Guitar & Vocals], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar]

Jamie Farrell joins the band to play some Bass and Keyboards. This lineup of the band only end up playing one gig.
Estel [Mark 5] Line Up : Sarah Sheil [Keyboards], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar]

Ashley leaves the band and returns to Roscommon. Jamie Farrell takes over Bass Guitar duties on a permanent basis.
The Boys Of Summer Line Up : Ivan Pawle [Keyboards & Effects]

Ivan Pawle play with The Boys Of Summer before joining the band. He went back to with the same group after he finished playing with Estel.
Estel [Mark 6] Line Up : Sarah Sheil [Keyboards], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar], Ivan Pawle [Keyboards & Effects]

Ivan Pawle is enlisted to play keyboards and add effects.
Bambi Line Up : Benjamin Delaney [Organ & Vocals], Karl Hussey [Guitar], Daniel Barry [Bass Guitar], William Stewart [Drums]
Estel [Mark 7] Line Up : Sarah Sheil [Keyboards], Grainne Donohue [Bass Guitar & Guitar], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar], William Stewart [Drums]

William Stewart was added to the live line up as a second drummer.
Cap Pas Cap Line Up : Grainne Donohue [Bass Guitar & Guitar], Jamie Farrell [Bass Guitar], Gavin Duffy [], Ed Kelly []

In January 2004, Estel split in two with Grainne and Jamie going on to form their own band Cap Pas Cap
Pete The Killer Line Up : Steven Anderson [Bass Guitar]
Estel [Mark 8] Line Up : Sarah Sheil [Keyboards], Andrew Bushe [Drums], Steven Anderson [Bass Guitar]

After the departure of Grainne and Jamie, Estel recruit Steven Anderson on Bass Guitar. Steven had previously played with Steampig, Cruachain and Pete The Killer
The Blood Red Dolls Line Up : Tommy O'Sullivan [Guitar]
Estel [Mark 9] Line Up : Sarah Sheil [Keyboards], Andrew Bushe [Drums], Jamie Farrell [Bass Guitar], Steven Anderson [Bass Guitar], Tommy O'Sullivan [Guitar & Vocals]

Estel finally auditioned and recruited Tommy O'Sullivan on Guitar. Tommy had previously played on some Estel sessions but now was added as a permanent member.
Betamax Format Line Up : Darren Maloney [Synthesisers]
Estel [Mark 10] Line Up : Sarah Sheil [Keyboards], Andrew Bushe [Drums], Steven Anderson [Bass Guitar], Tommy O'Sullivan [Guitar & Vocals], Darren Maloney [Synthesisers]

Darren Maloney of Betamax Format joined the band briefly on synthesiser duties.