Ive got one for sale, but it' probably not what you want. If you find one with everything you were asking for, it's going to be in the $100,000 and up price range. Also, most people aren't willing to take one apart to ship it to the UK. I shipped a RV-4 to Germany last year and its a big job.
RV-4 (N124TT) Sold
RV-8 (N269CP) Sold
RV-4 (N684ML) under construction