Hi Sheila,
For Cinderford & area old photos I strongly recommend you search out the "Tilley" series of postcards, so-called as made by Tilley of Ledbury in Edwin's pre WW1 days, renowned for being attractively coloured. A Google often throws hits on various sites showing or selling these cards including the wellknown auction sites.

Our local Lightmoor Press has produced a superb paperback book, A4 size so easier to read compared to some books of a similar nature, this has many cards displaying Cinderford shopfronts plus many more of the surrounding Forest area and it's industry etc.

http://www.lightmoor.co.uk/view_book.php?ref=L9006

However the book doesnt carry photos of the aforementioned "bottleneck". I see the "Royal Union" photo I refer to (off this site) is produced by "Valentines" so I suggest maybe search those out too ?
http://archiveshub.ac.uk/features/valentines.html