[Jamesdc]

Hi all, just to update you - as you have all said, the "safety solenoid valves" on the tank aren't really a thing, and alas, I went to another filling station and got LPG in absolutely fine.

I figured it was a problem with the pump, asked the chap in the shop and he told me: "no, it's been working fine all day that one has". I then put two and two together and ended up with 5.

Thanks for your input chaps.