I don't think that there are that many FH plates. I was thinking to contact with fire brigades. I've been looking for some kind of Fire Hydrants locations map in internet, but there is any.
Most fire hydrants in Leeds are indicated with plastic sign, black H on the yellow background. To make sure that I'm not gonna miss any I'm locating them as well. I've found on internet that minimum distance between fire hydrants in town center is 90m, commercial 100m and residential 200m. Additionally, I think that places where the are no fire hydrants available, are "guarded in case of fire" by Dry Risers. located less them a 1m above the ground. I have to make sure of that.
But i did found different plate. Looks similar in style as FH. FOAM INLET DIESEL TANK.
https://www.google.co.uk/maps/@53.79851 ... Ixg8OA!2e0
Any gues?
Kamil