I'm pretty sure these are all still going.
Flambards in Cornwall. Flambards has an appalling Victorian/WW2 'experience' to terrify children.
Diggerland, the concept album of UK theme parks
Twinlakes & Adrenalin Loving Mum
*My Favourite*, Morgawr at Crealy Park
Fantasy Island, Skegness
The Tyrion Lannister experience is available at Camelot. Reminds me of THIS
The most boring man alive introducing Dickens World in Kent. Note how he is contractually obliged to refer to London as 'Old London Town'
Theme parks abroad. The British just can't pull off this kind of thing: