Funnily enough, I drove one of these, in 1977 the first National Fireman’s strike in the UK. I collected mine from Staffordshire somewhere or other definitely not Oxfordshire. The were a pig when fully loaded with water, ok when empty.
The RAF modernised theirs with indicators and air horns

Ours has the flick out indicators and a small brass bell rang with a bit of leather strap.
Passed my HGV test in a Bedford RL, these were modified from them.
The Goverment gave us £10 each at the end. Our Brigadier MJ Short decided our tenner was better spent with each of us getting one of these:
It was a bit of fun at the time. Originally we didn’t have foam equipment, when it was fitted before we could be trained on its use, we were called out to a car fire in Shifnal iirc. I got lost as I had only returned from Germany a few weeks before. When we arrived the car had just about burned itself out. We spent some time figuring out how it worked and filled it full of foam


Some of my mates were less lucky and one guy earned PTSD in Birmingham City centre after a bad fire involve a few very young children, sadly they kicked him out
