It was good, but I'm not sure what the point of it was.
If you haven't played a UK gig in years, I can think of 3 reasons you might decide to:
1) Get a bunch of new fans – playing a bunch of 15 minute suites that all use the 'Loud–quiet–Snah solo–loud' template and then finishing your gig precisely at the 90-minute mark without an encore isn't likely to win any fans
2) Reward the fans who haven't had the chance to see you live in that time – yeah, no encore is a pretty poor reward. And seriously, with the back catalogue MP have got, it would have killed them to play a couple of 4 minute rockers?
3) Contractual obligation – someone said MP got funding for the gig. It certainly looked like they enjoyed themselves, but again, finishing bang on 90 minutes and walking off looks like a case of "OK, we said we'd play for an hour and a half, we have, let's go".
Like I said at the start, it was a good gig. But Motorpsycho are better than 'good' and if they're going to play more gigs in the UK in future, it'd be better if there's an obvious reason why.