If you’re thinking premium ones and the point is to make use of the occasion to avoid a claim from RM/HMRC, what about Blackbird or Sabre (blacklandrazors.com) — or maybe even the new model Dart will be released by the time you’re there — or the Karve/Christoper Bradley (karveshaving.com). Both are readily available, unlike eg Wolfman (never know), Charcoal (waiting list), Paradigm (no direct sales, small production).
Other options, have a look at razoremporium.com for the Rex Adjustable, classicshaving.com for a Cobra, bullgooseshaving.com might have some.
Timeless is an option, although also available at Maggards.
Rockwell or Colonial/General are also US based, lower priced options.
