The First P40 Ex French orders( Tomahawk MK1 ) didn't arrive in the UK until November 1940 The A/C didn't go to fighter Squadrons , but to Army Co-Operation Squadrons. These later became Tac/R Squadrons.
The Tomahawk IIA deliveries commenced in December 1940 , again the bulk of these going to Army Co-OP Squadrons , some were sent to Russia , others to the Middle east .
The Tomahawk IIB also started in December 1940 . Again many of these went to the Army Co-op Squadrons , but far more went to Middle East and More to Russia.
Deliveries of the final batch of Tomahawk IIB began in July 1941 No Uk service for this batch - All went to Middle East , some being transferred to Turkey , others to Egypt and a batch to Russia and of course 100 to China
The Different Marks can be identified by the serial range.
The Tomahawk MKI serials ranged from AH741-880, although when they first arrived AH741, 742 , 743
were coded AX900, BK852 853 respectively.
The Tomahawk IIA were serialled AH881-999, though AH991-999 were built to MKIIB standards.
The Tomahawk IIB were serialled AK100-570 , AM 370- 519 AN218- 485
Cheers
Terry McGrady