Originally Posted by 
Homestar
				 
			Thanks - but again, no reference to this supposed ADR compliant holder everyone seems to be on about online unfortunately.  Total volume will be under 250 litres - with my 160 litre main tank and 3 x 20 litre jerry cans, that's all good, but given I am going to quite a bit of trouble to keep my vehicle legal it would be good to know an answer to the ADR thingy as although I'm pretty comfortable sticking 2 jerrys on the rear bar, I only have a few mentions on various internet pages saying this is not ok unless in an ADR compliant holder - which I cannot find any reference to in the ARD's myself, but reading every line of every one is a task I'm not willing to undertake. :)