In reply to PTatts:
I would steer well clear of all halford brands of bikes (don't mean to offend anyone).
When i buy i AVOID the following things whatever type of bike i buy
* Brake and gear levers as one piece units..
* Cranks where the chain rings are not replaceable individually (look for Allen key bolts around the crank)
* Disk brakes which do not use hydraulics.. Either go for rim brakes or full hydraulics (The extra cost of hydrualics is well worth it for the stopping power)
* Frame size thats to big. ruins goo off road riding.
I'd look at going into a branch of Evans if there's any near you, because all the ones i've been to the staff are very helpful and give excellent knowledgeable advice. Much better than youll get from any halfords store. another one to look are is Leisure Lakes bikes.
Both these shops stock massive ranges of different manufacturers and one of the leisure lakes has a test track behind the store to go trial the bikes
(well did last time i went)