I’m sure I read somewhere that the bottles are legally the property of Calor (it’s only the gas you buy) – that might be why they won’t give them out rather than H&S
This (possibly molgrips excepted), the deposit doesn’t (or didn’t) cover the cost of the bottles, we had some nicked off the boat and when we went to replace them the cost was £70 each! And the insurance didn’t cover them due to the number of people ‘losing’ them and turning them into wood burners. The agreement you have to sign states the bottles are the property of calor, so that’ll be why there’s no spares, and probably why the pikeys nick em and leave them behind.
Not really upcycling* is it, taking a perfectly serviceable gas bottle, and turning it into a novelty stove.
*I hate that phrase, and the way it’s used to mean “really badly restored furniture done by someone with no skill” I suspect in 50 years time the antiques roadshow will be filled with nice furniture and the conversations will be along the lines of “well, it would be worth about £5000, but some idiot in the 2010’s decided to paint it in 2 coats of cheap paint and staple on some fabric from dunelm, in the craze known as ‘upcycling’, so it’s now only worth about £30”.