This was a gem!
The first known published UK novel centering Drag Queens. While most of the book is actually about the 2 men that are enamored by Colin you get a lot of behind the scenes of the drag show, some very catty and dramatic queens (a bit characterized but still fun)
The writing is a product of its time (1959) but easy to read. Colin is slated as the heartless love interest but I strongly disagree! I liked & understood him.