Brian1
Hope this info helps to bring light about the formation of the squadron and the planes they flew in particular relevance to you the dates during WWII.
201 SQUADRON
Originally formed 17th October 1914 at Fort Grange, Gosport, as 1 (Naval) Squadron, RNAS becoming 1 Wing, RNAS from June 1915. On 1st March 1916 'A' Squadron of 1 Wing, RNAS was detached and from 3rd July 1916 was known as the 'Detached Squadron'. The unit reverted to 1 (Naval) Squadron, RNAS from 3rd December 1916. Became 201 Squadron, RAF from 1st April 1918 whilst at Fienvillers, France.
Camel E5227 F; Snipe E8102.
Disbanded 31st December 1919 at Eastleigh.
Reformed 1st January 1929 at Calshot by redesignating 480 (Coastal Reconnaissance) Flight.
Nil (1.29-4.39) Southampton I S1125, II S1058; London I K5262 Z, II K5911 G.
VQ (4.49-9.39) London II L7042 VQ-W.
ZM (9.39-8.43) London II K5257 ZM-Y; Sunderland I P9606 ZM-R, II T9087 ZM-O, III ML743 ZM-A.
Nil (8.43-7.44) Sunderland II T9087, III EJ137 T.
NS (7.44-4.51) Sunderland III ML759, V RN304 NS-L; Sea Otter I JM815; Bv 222C-012 VP501 .
A (4.51-2.57) Sunderland VB889 A-D.
Disbanded 28th February 1957 at Pembroke Dock.
Reformed 1st October 1958 at St Mawgan by renumbering 220 Squadron.
201 (10.58- .66) Shackleton MR.3 WR977 201-L.
Nil (.66- ) Shackleton MR.3 WR977 O; Nimrod MR.1 XV240, MR.2P XV241.
Currently as @ 1st April 1998 at Kinloss.