Personally I stay away from anything that I would consider 'brandable' on .co.uk's and stick to keywords (an entrepreneurial brain would see a possibility in probably every 'brandable' domain and would be hard to stop imo, trademark clashes etc).
If I spot a FTR I like, I think the first thing I do is see if it's been registered before, I'll also do a keyword check in the search engines... you may even find a better combination/suggestion come up and it's FTR.
Also when doing search engine checks, if you get like 100,000,000,000,000+ results, click through the pages and see if your keywords are still there/relevant.
I like wordcheck.co.uk, word games are pretty popular and addictive... could see something there...