Thanks for the suggestions Marty.
I've considered the Sony, but this quote from steves digicams website "Capturing a well-exposed flash image of even a moderately-sized room is beyond the T7's capability" kinda puts me off.
Feedback about the Ixus 700/750 is that it captures better pics than the Ixus 55, but I just like the feel of the 55 more than the 750
If I can find a camera that captures images as well as the Ixus 750, but which feels/looks (subjective, I know) as good as the Ixus 55 I'd be happy.