Thank you, Sally! That was what I was looking for but could find.
My C/H went off during a power cut overnight tues/weds and I had to drag my gas heater out. I need to replace the bottle and had been told the price was over 20 euros. How will people who rely on gas bottles for everything (cooking heating and hot water) manage with them anywhere near that price? It's over 18 euros and I suppose. like petrol, will continue to rise...