The American M22 Locust Light Airborne Tank is included for completeness (thru 12/46).  The British had 260 M22s through Lend-Lease, and 12 were used in combat during Operation Varsity (February, 1945) -- being air-dropped in by Hamilcar gliders.*
*
The British fitted the US M6 gun with the Little John extruder adapter (squeeze-bore) that reduced the projectile from 37mm to 30mm, increasing velocity to 4000 ft/sec from 2700 ft/sec. A new high mass and shatter resistant tungsten carbide ammunition was developed for this application.