I've done some research and read the (very useful) Power Tools FAQ. Through an indirect route I can get a staff discount on Bosch and it looks like the Bosch PBH 240 RE has what I'm looking for. Because of the discount I should get it for £108 (rather than £140-ish). It's key features are:
Rotary hammer and chiselling machine Electronic pneumatic hammer produces a massive 2.2 Joule impact force Electronic variable speed control Forward and reverse SDS -plus chuck for hammer drilling Max drilling dia: concrete 24mm, 65mm with a core drill in masonry Keyless chuck (heavy duty) for rotary drilling and screwdriving Power input 620w
My main query is to whether this is a decent power tool that should be good for most things an average (at best) DIY-er might want to do over the long term, or is it hopelessly over the top and I should really go for one or two models down?