I don't know whether you'd end spending a lot more if Customs get a hold of it in the mail!
For a tenner though you can get a good fixed blade knife, the Frost's Clipper from a number of suppliers in the UK. Try
http://www.attacc.co.uk and check out the deer stalking page.
Just thought, if you do want a cheap, decent folder then you should look at Opinels. You should be able to see them in outdoor, fishing etc shops. Need a bit of work to get them sharp and they don't look very modern but do the job well.
Justin