Black Diamonds may
possibly have been connected with Javelins.
266 Squadron ATC C1962-64 - picturestockton
I was CCF [Royal Artillery] - our training was done at the TT on the old Middlebrough road. I vaguely remember a squadron, number unknown, of Javelins known as the Black Diamonds. Again not sure if they were at Thornaby or Middleton - hope my memory is not completely faulty.