All Raleighs had the Raleigh trademark fork (regardless of material) and this included the RRA, Lenton, Super Lenton, Clubman etc. until the Lenton Grand Prix was withdrawn at the end of the 1961 model year. The new line including Gran Sport, Blue Streak etc. had a new pattern fork which, I think, is the same used on many of the lower end lightweights especially those in 2030 steel not Reynolds 531.
Peter Kohler
Washington DC USA