Hi Lizzie,
I now live in Gloucester since 2002, I do remember the laundrette - not sure if it's still there or perhaps it's an amusement arcade.. that seems to ring a bell. The road to the left of that is where the Police Station is, which I've never heard as as being referred to the 'new' police station because now it's one of the biggest eyesores in Stroud!...being of a nice 70/80s design...!
The Playhouse, you'll be pleased to know, is still there and going strong.
Incidentally if you get to the cross and turn right down the hill, I would say that area has changed beyond all recognition, with the farmer's market area, I think there used to be a carpark there and I also remember a proper old fashioned tea shop on the corner. Well that 'corner' isn't even there anymore.
Well, sorry I digress. I think we have found the right area for Tower Hill.
Thanks very much!