Been over to my local aero club, to buy my first few litres of Jet A1, for the diesel heater I installed in my outdoor workshop. I had it running great on white diesel, but white is expensive. I was unable to find any red locally, kero/ heating oil at 60p per litre would have been OK, but the few suppliers I could find, where they had a pump, wanted more than the cost of white diesel per litre, plus the many miles to collect it.
Aero clubs Jet A1, is 94p per litre, so I collected 20L this morning, saving me 41.9p per litre on the cost of white. I had to fill a form in, at the flight desk, and dodge a few whirling props, on route to the bowser, but all good. Since then, I've had it running on test on the jet fuel, and it's indistinguishable from the white and perfectly legal to use for the purpose.