I use both types, due to dragging a lot of stuff here when we moved, [ my preconceptions were dragged along too! ]. I have to say I'm on the verge of dumping all my Brit plugs and sockets, mainly in the workshop, in favor of the French ones, as not much Brit stuff is left that works after 7 years.
The French stuff works ok, now we have opted for LeGrande Mosaic. I have a lot of suspended french receptacles mounted 2 metres off the deck in the shop for portable tools, which is great for working around jobs with the router &c.. My only gripe is the Frog extension reels. Of all the receptacles, these reels are an absolute pita getting a plug inserted when using tools away from the fixed outlets. The shutter mechanisms seem to rapidly wear out. Must be all that dried blanc-mange* Dave!

*blanc-mange, the white-eat of technology!


Wood work but can't!