[Azathoth]

Originally Posted by Cassius!

Hmm… I considered an Inforce light, complements Glocks well.
However most real weapon lights developed for pistols have premium prices in the UK, as few ever get imported as its near impossible for any civilian to get ahold of any handgun.
I would get a used Streamlight or Inforce but there doesn't seem to be any in the UK markets. I'll keep my eyes open in the next few days but I might jump towards getting the SBAL-PL clone.

Try continental Europe,

Poland, Germany and the Scandinavian countries have lots of retailers of tactical gear, and their are healthy tactical communities in those countries with forums etc where you can find used gear. Language barrier maybe an issue.

Failing that go to the US military forums or 'survivalist' forums for used gear.