It's difficult isn't it !
A number of Taylor's Eyewitness penknives (Richardson, Sheffield), which I collect.
A beautiful UK-designed and manufactured air-rifle (Air Arms, Hailsham, Sussex)
I'm hard pressed to think of anything else.
Taking a different view, which is anything not made in China, then there is wider choice. Chinese guns are rubbish, the very best being European (e.g. Anschutz, Morini, Steyr, Air Arms, BSA, Theoben etc), the best bikes are USA, best bike wheels are French, best folding bikes are British (Moulton, Brompton), the best hi-fi is British (e.g. Linn, Ruark, Tannoy) and of course, the jewel in the crown - F1 - still mainly a European enterprise.