See , now I am a user of an L5 and have always banged on about if its plumbed and used safely/sensibly then you should not have any problems , but I do cringe every time I see the above pic , and I also wonder if the gas BBQ was still connected and on whilst in transport , then I could see a reason for explosion upon return .
But , I then think about the calor depot close to me who have thousands of bottles left out in the direct sun all the time and that has not gone bang yet .
Also , last year my dad got a new bottle for his BBQ , he used it on the Saturday disconnected and went to use it again on the Sunday but the bottle was empty , it was a BP gaslite bottle that you can see through so there could be no confusion if the bottle was not full the day before upon purchase .
Which brings me to my next point , yesterday I went to my shed and upon opening the door was met by a lungfull of propane , I have 2 bottles , one is a BP gaslite and the other a 19kg Calor , which one was leaking I
dont know , but it was

So I am left with the assumption that it is indeed a lottery with regard to safety !
I'm not willing to pay out for and run diesel , plus I'm up to payload or close to anyway , thats what you get for buying a stupidly small van ( save you typing it Daz )

So this winter I will either go BANG or have an immersion fitted