Although the Krays were aware of the progress being made by the police, they continued their criminal activities until finally, on 8 May 1968, Read had all the information he felt necessary to proceed with arrests.
Recognising the threat of intimidation posed to witnesses by any member of “The Firm”, a major operation was mounted, that resulted in the dawn arrest of both Kray twins at the Shoreditch home of their parents, as well as twenty four other principal “Firm” members in other parts of London, during the course of 9 May 1968.