Try as you might, you can't find any information anywhere about a band called 'Dazzling All Night Rock Show'. There is every likelihood that it was simply used as a nom de plume by Marty Wilde and Peter Shelley who released '20 fantastic bands' as a single on November 23, 1973.
Glamrock was the name of the game, you can easily hear the influences on this song. It isn't that hard to imagine that bands like The Sweet would record a similar kind of song. But they didn't, and this version didn't become a hit.
My collection: 7" single no. 5798
Found: Discogs.com, received March 2017
Cost: 2 pounds
Tracks: '20 fantastic bands' / '20 fantastic bands (continued)'