Lots of sweet rides in wales. Most of them just a little outside of cardiff but not hard to find. if yu don't want mountain biking then you can always get a road/cyclocross and head up into the brecon roads.
The problem i'm having is alot of the bikes that are being talked about on this forum don't seem to be sold in the UK. We get the big brands like Giant, Specialized, Trek etc but hard to find some of the more american ones like Surly or Brodie.
I think we only have one Kona dealer in Cardiff. (I want to see the Kona Dew before i make my choice).
If find it hard finding certain things here in Canada too

cycling and non cycling related. I'm not even sure if there is a Kona dealer here in Edmonton though I have seen the Surly.
Hubby and I are hoping for a 6 week tour of the area. I have friends in Tyne & Wear and family in Scotland/Ireland so hopefully we'll get everywhere in that timeframe. Cardiff for sure or I'm pushing my hubby in the T.A.R.D.I.S and taking him somewhere bad..LOL
I liked the Giants and I almost bought one but one LBS had one last 07 Globe that I had wanted since 07 so I grabbed it. Luckily it was the right size for me.
Dont forget to post a picture of what you get
ETA: Oops I guess there are two Kona dealers here in Edmonton. At two of the LSB's I haven't visited yet. The Dew's look really nice too