Have you tried searching this forum for the term gloryhole? There have already been multiple threads with links to gloryhole information around the world.
Besides, isn't the UK rather big to be looking for a gloryhole anywhere within it?
Yes the UK is large (some 400-odd miles Edinburgh to London) so small by US standards.
I'm fortunate to travel a fair bit around the north west of England / Scottish central belt. Hence the general nature of my query. London is (generally speaking) out.
PS Etoile - youre hot ! - Loved the pics on your home page