-
Yes, that is the only plug in common use in the UK. There are no non-grounded sockets.
You get non-grounded plugs/chargers with a plastic earth pin but that is probably not what you mean.
(I'll be disappointed if no-one on here in the UK doesn't have some unusual sockets, my in-laws have 5A round pin lamp sockets for example, switched by the door)
Edit: I forgot shaver sockets in bathrooms - they have an isolating transformer and aren't used for much apart from shavers and electric toothbrushes. Very low current available.
Do people in Scotland also use these "Type G" kind of plugs?
Are those also being used for, say, iPhone chargers (or are there smaller / non-grounded plugs as well for that)?