Right, need a new amp. Something small and portable but still loud enough to gig with - no bigger than a 1x12 combo. I'd consider a small head and cab too. Don't have a particularly large budget - £500 at the absolute most.
I've been looking at the Vox Night Train (downsides - no FX loop or reverb, I'd really prefer to have one or the other)
Blackstar HT-20 (No standby switch - not a big deal becuase it's built into the input, but I've had bad luck with amps with no standby...)