yes but the joules are not gonna change , both post are relevant  

Thanks, would you be able to direct to the specific part(s) of legislation that prohibits either the private use of a tank without the RHO mark or the transporting a tank without an RHO mark by car? I haven't been able to find these?   The "The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment (Amendment) (EU Exit) Regulations 2021" link mentions "manufacturer, importer, or distributor" and the DfT Guidance for 'Placing transportable pressure equipment on the market in Great Britain" says it's "about the rules for placing transportable pressure equipment on the market in Great Britain from 1 January 2023." And specifies "Placing on the GB market’ means the first supply of TPE for distribution or use in Great Britain in the course of a commercial or public service activity, whether in return for payment or free of charge.".   I might have missed a section from one of the links (or from elsewhere) or be misinterpretating, but I would take this to mean the llinked legislation/guidance applys to businesses and entities selling, renting or loaning TPE rather than to individual airsofters using or transporting tanks?      

still didn't chrono, here's someone else's un bias  review of the same day