You can get the Photon 2 in the UK at www.clubbertoys.co.uk/
At the amazing price of £15 including delivery. Yeah, oh dark clouds of gloom and misery, the best survival torch in the UK is cheapest on a dance music site <img src="images/graemlins/crazy.gif" alt="" />. Its been a while since I was "dissin the [censored]" <img src="images/graemlins/mad.gif" alt="" />(I thought Garage Music was a Perry Como tape for 2.99 from the local ESSO), but there it is...
In the UK, yellow is best for night time map reading because you only lose the minor roads, and you can still see them by the lines edging them.

Hope this helps.