The major whistle maker in the UK is Acme (http://www.acmewhistles.co.uk). I'm unaware that English Firemen had or have whistles, but if they do (did?), they would have got them the same place as all our policemen, Boy Scouts and football referees - the Acme company. I'm sure that they'll deliver them to you even if you live right out in the desert. Wile E Coyote gets all his stuff from Acme.

Les