UK is definitely the most lenient EU country when it comes to supplements and DS, I think there's maybe an even bigger selection of DS available in the UK than in U.S. The price just hurts.
Supplements like PES are in the grey zone here in Finland, its technically an AI but its not in the banned substances list so the customs can't really take it even if they want to. My friend ordered from the UK and the guys at the customs here opened the bottle and took 1 pill for laboratory tests lol. It took 1 month before he could go pick up his order from the customs.