| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Code |
Notes |
| M.A. | Mombasa - Aden (Military). (Obsolete) |
| M.A. | Madras - Chittagong (Military). (MA1 sailed 3.9,1943. To be discontinued after 18 October 1943. |
| M.B. | Colombo - Bombay (Military). (M.B.1. sailed 15.4.1942). |
| M.B. | Madagascar - India. (CAF.0.1035) |
| M.C. | Troops convoy Kilindini to Durban. (M.C.1 sailed 7th November, 1942) |
| M.C. | Kilindini - Cape of Good Hope (replaced by A.K.D.) |
| M.C. | Aden - Kilindini - Durban (Military) (C. in C.E.F. 0716Z/19/2/44) Reported instituted 30.8.1944. |
| M.D. | Madagascar - South Africa. (CAF.0.1035) (only 1 convoy sailed) |
| M.E. | Malta - Alexandria. |
| M.E.F. | Return to Middle East from assault on Sicily. (Operation 'Husky') M.E.S. (Fast and slow). |
| M.F. | Port Moresby - Milne Bay. |
| M.G. | Malta - Gibraltar. |
| M.G. | Pilot Town (Mississippi) - Galveston. (B.R.O. Galveston 1829Z/9/9/42) |
| M.H. | Milford Haven - Holyhead. (C. in C. WA. 1133/9/7/41. F.O.I.C. Milford Haven 1610/10/7/1941) Barry Roads - Clyde. |
| M.J. | M.B. renamed (ie the Madagascar - the India convoy). (M.J.1 arrived Bombay 21.12.1942) |
| M.K. | Madagascar - East Africa. |
| M.K. | Mediterranean - U.K. (Amended C.A.F.O. 2645/44) |
| M.K.F. | See 'Torch' 1934Z/12/11/42. (Later Port Said and Alexandria - North Africa - U.K. (fast, military) |
| M.K.S. | Mediterranean - U.K. (Slow). (Later Port Said - Alexandria - North Africa - U.K. (Slow) (military). |
| M.K.S.(Z) | Slow ships for M.K.S. (C.in C. Levant 081126 August, 1943). |
| M.N. | E. Africa coastal (Kilindini - Diego Suarex - Pamanzi). M.N.1 sailed from Kilindini 15,10.1943.Apparently used subsequently for Mauritius - Seychelles. M.N.1 arrived at Seychelles 14.2.1944 (N O I C Seychelles 141645Z). |
| M.N. | Kilindini outwards to dispersal. (Run very rarely) |
| M.O. | French Mediterranean Ports - Algiers and Oran.(Mediterranean local C. in C. Med. 151218 Oct.1944). |
| M.R. | Madras - Rangoon. (C. in C.E.I. 14022/10). |
| M.R. | Madras or Ceylon to Rangoon. (C. in C.E.I 230638Z May, 1945) |
| M.S. | Melbourne - Singapore. (Admiralty 1748A/19/11/41).(Combined Military and Trade). (Cancelled 1942) |
| M.S. | Mediterranean local. (C. in C. Med 151218 Oct 1944)j |
| M.S. | French Mediterranean Ports - Naples. |
| M.T. | Methil to Tyne (Cancelled) |
| M.V. | Milne Bay - Townsville direct. |
| M.W. | Alexandria - Malta. |
| M.W.F. | Middle East assault convoys (Operation 'Husky' July 1943) M.W.S. (Fast and slow) |
Data obtained from The National Archives kindly provided by Roger Hollywood.