In reply to All:
Great suggestions keep them coming!
Lorriane - Looks nice.
Britomartis - admittedly I have a vague memory of it, but I thought the main part was lyback, was it not?
Espolon Limaban - Looks Amazing!
Gargoyle Flake - I have done it but somehow don't remember the layback. I must have been too traumatised by the lack of protection at that point.
Crew Cut - looks good!
Answer Crack - looks great, it even says it's the answer to Heaven Crack, that's pretty much exactly what I am after.
Sword of Damocles was on my list anyway
F-route - noted
Bull's Crack - noted
Great N Road - I have done it, but I wouldn't class it as the layback climb. There's the whole variety of moves on it. Great route!
God and Tut's Anomalous - Both sound great!
Paragon - It doesn't fit with the rest on the basis of it being too hard
Altar Crack - also too hard, as mentioned in the OP, dismissing for that reason.
T-rex - noted as a possibility for the future, but may be too high a grade for me.
Bottom pitch of Valkyrie would probably be very hard as a pure layback, very easy to jam though.
I will look through the rest later, keep them coming! Thanks!