| '000 | Royal Navy | Army | Royal Air Force | Total |
| 1939 | ||||
| September | 180 | 897 | 193 | 1,270 |
| December | 214 | 1,128 | 215 | 1,557 |
| 1940 | ||||
| March | 241 | 1,361 | 240 | 1,842 |
| June | 271 | 1,650 | 291 | 2,212 |
| September | 307 | 1,888 | 420 | 2,615 |
| December | 333 | 2,075 | 491 | 2,899 |
| 1941 | ||||
| March | 365 | 2,166 | 559 | 3,090 |
| June | 395 | 2,221 | 662 | 3,278 |
| September | 424 | 2,292 | 767 | 3,483 |
| December | 449 | 2,340 | 813 | 3,602 |
| 1942 | ||||
| March | 477 | 2,397 | 816 | 3,690 |
| June | 496 | 2,453 | 835 | 3,784 |
| September | 529 | 2,494 | 895 | 3,918 |
| December | 566 | 2,566 | 936 | 4,068 |
| 1943 | ||||
| March | 610 | 2,628 | 948 | 4,186 |
| June | 660 | 2,673 | 967 | 4,300 |
| September | 710 | 2,679 | 982 | 4,371 |
| December | 756 | 2,680 | 999 | 4,435 |
| 1944 | ||||
| March | 768 | 2,680 | 1,000 | 4,448 |
| June | 778 | 2,720 | 1,002 | 4,500 |
| September | 776 | 2,741 | 992 | 4,509 |
| December | 780 | 2,760 | 985 | 4,525 |
| 1945 | ||||
| March | 781 | 2,802 | 970 | 4,553 |
| June | 783 | 2,920 | 950 | 4,653 |
| '000 | Women's Royal Naval Service | Auxiliary Territorial Service | Women's Auxiliary Air Force | Nursing Services | Total |
| 1939 | |||||
| September | 1.6 | n/a | n/a | 2.4 | n/a |
| December | 3.4 | 23.9 | 8.8 | 7.0 | 43.1 |
| 1940 | |||||
| March | 4.4 | n/a | 8.9 | 8.2 | n/a |
| June | 5.6 | 36.1 | 11.9 | 7.6 | 56.6 |
| September | 7.9 | 36.4 | 17.4 | 7.9 | 69.3 |
| December | 10.0 | 37.5 | 20.5 | 8.2 | 75.1 |
| 1941 | |||||
| March | 12.3 | 37.5 | 27.0 | 9.0 | 85.8 |
| June | 15.1 | 42.8 | 37.4 | 10.0 | 105.3 |
| September | 18.0 | 65.0 | 64.1 | 10.4 | 157.5 |
| December | 21.6 | 85.1 | 98.4 | 10.9 | 216.0 |
| 1942 | |||||
| March | 24.8 | 111.1 | 110.8 | 11.9 | 258.6 |
| June | 28.6 | 140.2 | 125.7 | 13.0 | 307.5 |
| September | 33.5 | 162.2 | 141.5 | 13.9 | 351.1 |
| December | 39.3 | 180.7 | 166.0 | 14.6 | 400.6 |
| 1943 | |||||
| March | 45.0 | 195.3 | 180.1 | 15.5 | 435.9 |
| June | 53.3 | 210.3 | 181.6 | 16.4 | 461.6 |
| September | 60.4 | 212.5 | 180.3 | 17.5 | 470.7 |
| December | 64.8 | 207.5 | 176.8 | 18.4 | 467.5 |
| 1944 | |||||
| March | 68.6 | 206.2 | 175.7 | 18.3 | 468.8 |
| June | 73.5 | 199.0 | 174.4 | 19.5 | 466.4 |
| September | 74.0 | 198.2 | 171.2 | 20.3 | 463.7 |
| December | 73.4 | 196.4 | 166.2 | 21.1 | 457.1 |
| 1945 | |||||
| March | 73.2 | 195.3 | 159.7 | 21.5 | 449.7 |
| June | 72.0 | 190.8 | 153.0 | 21.4 | 437.2 |
| '000 | Men | Women | Total |
| 1940 | |||
| June | 1,456 | - | 1,456 |
| 1941 | |||
| June | 1,603 | - | 1,603 |
| December | 1,530 | - | 1,530 |
| 1942 | |||
| June | 1,565 | - | 1,565 |
| December | 1,741 | - | 1,741 |
| 1943 | |||
| March | 1,793 | - | 1,793 |
| June | 1,784 | 4 | 1,788 |
| September | 1,769 | 16 | 1,785 |
| December | 1,754 | 22 | 1,776 |
| 1944 | |||
| March | 1,739 | 28 | 1,767 |
| June | 1,727 | 31 | 1,758 |
| September | 1,698 | 32 | 1,730 |
| December | 1,685 | - | 1,685 |
| '000 | Full-Time Men | Full-Time Women | Full-Time Men | Full-Time Women | Total |
| 1940 | |||||
| June | 2.3 | - | 25.6 | - | 27.9 |
| 1941 | |||||
| June | 4.0 | - | 29.3 | - | 33.2 |
| December | 4.4 | - | 30.0 | 0.4 | 34.8 |
| 1942 | |||||
| June | 5.1 | 0.2 | 28.0 | 0.8 | 34.0 |
| December | 5.5 | 0.4 | 25.6 | 0.9 | 32.4 |
| 1943 | |||||
| March | 5.7 | 0.7 | 25.2 | 1.1 | 32.8 |
| June | 5.9 | 1.0 | 24.8 | 1.2 | 32.9 |
| September | 6.2 | 1.4 | 24.1 | 1.3 | 32.9 |
| December | 6.4 | 2.1 | 23.2 | 1.3 | 33.0 |
| 1944 | |||||
| March | 6.5 | 2.5 | 22.4 | 1.4 | 32.8 |
| June | 6.4 | 2.6 | 22.1 | 1.5 | 32.7 |
| September | 6.4 | 2.8 | 21.9 | 1.5 | 32.5 |
| December | 6.5 | 2.9 | 21.4 | 1.4 | 32.2 |
| 1945 | |||||
| March | 6.5 | 3.0 | 21.2 | 1.4 | 32.1 |
| June | 5.7 | 2.1 | 0.9 | - | 8.7 |
Notes:
(1) All figures at end of month.
(2) Armed Forces excludes men locally enlisted abroad.
(3) Women's Auxiliary Services inclues women locally enlisted abroad.
(4) Royal Navy includes men serving with the Royal Navy on T.124 agreements, Royal Marine Police and, up to June 1941, prisoners-of-war and missing.
(5) Army includes men serving with the India Unattached List, but excluding the British Indian Service. Men locally enlisted abroad are included up to September 1941.
(6) Auxiliary Territorial Service excludes thos locally enlisted abroad on modified forms of Auxiliary Territorial Service engagements whose documents were maintained outside the United Kingdom. From June 1944 all women locall enlisted abroad whose documents were maintained outside the United Kingdom are excluded.
(7) Nursing Services includes Queen's Army Schoolmistresses.
(8) Royal Observer Corps figures before 1942 are estimated.
Source: Statistical Digest of the War: History of the Second World War.