As I pointed out above, it has a lot to offer tourists
If you are a history buff, you can happily spend a month around the place (I spend 3 days just pottering around Cambridge)
If you like nature, well, it hasn't got the grand vistas that are there in the USA, but the west country and the north of Scotland or the Orkneys have their own charm.
The UK’s tourism numbers aren’t looking good...
https://www.visitbritain.org/research-insights/inbound-visits-and-spend-quarterly-uk