I heard from my sister who works for ticketmaster that they come on at 8. Heres the times for the manchester gig, i presume that the rest of the uk and ireland gigs will have roughly the same time. hope that helps
In Brussels they were on stage at 9.25 and finished at 11.35. Scottish gigs I've been to in the past were approx 9-11pm. I remember as I missed the last train from Glasgow in 93!