I have sold a couple of 12litre cylinders over the past 3 years. The last one the buyer arranged a courier to pick it up...Now i am not a 100% sure of who his courier was, but it was not Yodel, but strangely enough, Yodel picked it up..i know sounds weird....anyway yodel took it of me at about 3.30pm...and the guy had it in Wales for 11am....So was pretty quick, now i know the goal posts get moved all the time with regards to pressured containers, even when empty...but just double check....pretty sure his courier was Parcels to Go, maybe yodel help them out, not sure about that one...