For modern iterations of Rocketman's list, also "new" Beesley action guns made by:

PV Nelson
P Chapman
Watson Bros
Hartmann & Weiss

(Perhaps the new Holloway & Naughton)? John Keen is their actioner and certainly did his fair share with PV Nelson.

Also I believe the Belgians have copied it on occasion.

The AyA version is supposedly very good but as R-man says no longer made.