I'll answer that from experience of that era, i was up in Glasgow in 1968-9 doing a keeping the army in the public eye tour, it was just another name for recruiting. There was a notorious gang on the Gorbles estate, [im am not sure if that is spelt right] and i believe they were called The tongs, and their name was in gaffiti all over Glasgow. there was a book writen on the notoriosness of the gang and its leader, called i believe, The Razor King. On leaving Glasgow on friday morning, there was a newspaper sitting on the seat that i picked up, it was the daily record, and the front page picture that took the whole of the page except the headlines, was of a baby, no more than a few months old. She/he had a slash from the corner of the eye to the corner of the mouth, it was a razor cut, and it was done while the mother was pushing a pram with the baby in. That picture haunts me now even after all these years later. In answer to your question,; no thank heavens, they are nothing like the razor gangs.
Regards ian 2411