Ruthorth Autojumble (near York) today there was a chap supplying gas (proper company) aimed at the low user. I only asked about Oxygen, but he was talking fifty quid standing charge for the cylinder- keep cylinder as long as you want, (years), return it and the money is refunded. 35 quid per refil.
I have his number if anyone is interested.
I have his number if anyone is interested.