You can see from the MSDS that it is 70-90% "highly refined mineral oil" so I doubt it has any PAO content.
There are so many oils available in the UK with manufacturer approvals so there isn't a good case to buy one that only claims to "meet the specifications" unless they are particularly cheap and the S&A oils are not particularly cheap.
If you plan ahead and keep your eye on EuroCarParts they often have deals for a day or two on the various approved Shell Helix Ultra GTL oils - make sure you use the discount code which you will find on their site or search the internet for a 50% code. I purchased some 0W-30 AV-L which is VW 504/507 approved for £2.49 per litre. Now that is a good price.