| 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 |
| U.A. | U.K.-Azores. See 9th October 1943. U.A.1 sailed 28th September, (See D.O.D.(H), Vol 13). U.A.2 sailed 30th September. |
| U.C. | U.K. - New York (Special). |
| U.C.T. | U.K. - New York (Special and Military). |
| U.G. | USA - Mediterranean (Amended CAF.0.2645/44). |
| U.G.F. | U.S. 'Torch' convoys eastbound (fast). See A.M. 1835A/3/11/1942. Re-discontinuance see America and West Indies - 12.7.1943. Re resumption see Cominch 181531Z April 1944. Began with U.C.F.12. leaving Hampton Roads 1st July. |
| U.G.L. | U.G. landing craft convoy. |
| U.G.S. | U.S. 'Torch'convoys eastbound (slow). See A.M. 1835A/3/11/42. Re discontinuance see A. & W.I.-12.7.1943. |
| U.L. | Cuxhaven - Humber. (Admiralty 300024B/May 1945. |
| U.L. | Elbe (Hamburg) - Humber. (CAF.0.1101/21/6/45). |
| U.N. | U.K. - New York (Fast) proposed D.T.D. 1913A/20/2/43. |
| U.O. | See N.C.S.O. Sydney (N.S.W.) 0116Z/22/3/43. |
| U.R. | Loch Ewe - Reykjavik, Iceland. (W.D.7/12/41). (Began 13/12/41). After 17th March extended to North America. (D.T.D. 1207A/17/Z/43). Run from Belfast after closing of Loch Ewe (Admty. 311150, Dec1944). |
| U.S. | Australia and N.Z. - U.K. (Commenced 10.1.1940). |
| U.S. | Australia - Suez. (Military) CA.F.0.1101,21.6.1945. |
| U.T. | Troop convoys, U.S.A. - U.K., commencing August 1943. (J.S.M. Washington 170103Z July 1943) U.T.1 left Hampton Roads 20.8.1943. Cancelled by Cominch 181530 April 1944. |
| U.Y | U.K. - New York (Slow) proposed D. T.D. 1913A/20/2/43. |
Data obtained from The National Archives kindly provided by Roger Hollywood.