Hi Paul, thanks for the reply. We have the same laws in this country ref the kegs and there is even an organisation, Kegwatch, which actively tracks them down (although they then hold them ransom until the brewery pays to get them back) my ones are legal and owned by me.
Lots of home brewers here are moving away from cornies and starting to buy commercial sankey kegs from the manufacturer for the same price if not cheaper.
The video you linked to is the method I use for the older type but just doesn't work with the newer stainless version. Oh well, it will make a good HLT