As my annual BOC rental is due on my CO2 bottle and as I am fed up of paying £57 a year to BOC and £25 a top up. I had a look on fle bay and found a cheap supplier. £25 all in for a full cylinder plus £15 a refill when needed. I actually bought 2 for £20 each, means I can get one refilled whilst I use the other. The guy lives near Barnsley and is a real nice guy, he trades on fle bay as andysammett, U2U me for his phone number if anyone wants to contact him direct

Hope this is help to anyone

Does he only do co2 or does he do argon/co2 mix?

25 quid a top up IS cheap, I have to pay BOC 46 quid a go for my pure argon cylinder. (before you ask, I'm using a TIG welder.)

Nope £15 is the top up price, the £25 is for a full cylinder. I think he does more than co2.