Steam locomotives operated in the United Kingdom with names beginning with A.
| Name | Railroad, # | Builder, s/n | Build date | Whyte type | Notes |
|---|---|---|---|---|---|
| A. H. Mills | GWR 3704 | 5/1906 | 4-4-0 | Named in July 1914; rb May 1915; rn Sir Edward Elgar in August 1932; rn 3414; withdrawn October 1938. | |
| A. H. Peppercorn | LNER 525 | Doncaster 2016 | 12/1947 | 4-6-2 | Officially named 12/1947 at Marleybone; Became BR 60525; wd 3/1963; scr 4/1963. |
| A. Harold Bibby | LNER 1250 | NBL 26151 | 10/1947 | 4-6-0 | Officially named 12/1947; became BR 61250; wd 4/1966; scr 8/1966. |
| A. S. Harris | SR 756 | ||||
| A1 Lloyds | GWR 100 | Swindon | 4/1925 | 4-6-0 | Became BR 100; wd 5/1950; scr at Swindon. |
| Abberley Hall | GWR 4981 | Swindon | 12/1930 | 4-6-0 | Withdrawn October 1963; scrapped 7/1964. |
| Abbot | GWR | 4-4-0 | |||
| Abbotsbury Castle | GWR 4083 | Swindon | 5/1925 | 4-6-0 | Was originally to be named Oystermouth Castle; Different references give withdrawal dates of October 1960 and December 1961; scr 12/1961 at Swindon. |
| Abbotsford | LNER 141 | Darlington 2060 | 12/1948 | 4-6-2 | Became BR 60141; wd 10/1964; scr 12/1964. |
| Abbotsford | NBR 879 | NBL 17380 | 8/1906 | 4-4-2 | Became LNER 9879 in 1921; wd 11/1936; scr. |
| Abdul Medjid | GWR | 2-4-0 | |||
| Aberdeen Commonwealth | SR 21C7 | 4-6-2 | |||
| Aberdeenshire | LNER 249 | Darlington | 2/1928 | 4-4-0 | Rn 2713 in 1946; became BR 62713; wd 9/1957; scr 3/1958 at Darlington. |
| Aberdonian | LNER 158 | Doncaster 2052 | 11/1949 | 4-6-2 | Became BR 60158; wd 12/1964; scr 3/1965. |
| Aberdonian | NBR 868 | NBL 17369 | 7/1906 | 4-4-2 | Became LNER 9868 in 1921; wd 9/1933; scr. |
| Aberdonian | NBR 903 | R Stephenson 3430 | 8/1911 | 4-4-2 | Ex-Cock o' the North. |
| Abergavenny | LBSCR 325 | 4-6-2T | Became SR 2325; wd 1951. | ||
| Abergavenny Castle | GWR 5013 | Swindon | 6/1932 | 4-6-0 | Became BR 5013; wd 7/1962; scr 8/1962. At least one reference shows a withdrawal date of February 1965. |
| Aberporth Grange | GWR 6860 | Swindon | 2/1939 | 4-6-0 | Withdrawn February 1965; scrapped 3/1965 at Swindon. |
| Aberystwyth | GWR 3712 | Swindon 2180 | 6/1906 | 4-4-0 | Named in June 1913; denamed August 1930; rn 3422; withdrawn March 1936; scr at Swindon. |
| Aberystwyth Castle | GWR 4084 | Swindon | 5/1925 | 4-6-0 | Became BR 4084; Withdrawn October 1960; scr 11/1960 at Swindon. |
| Abney Hall | GWR 6900 | Swindon | 6/1940 | 4-6-0 | Became BR 6900; Withdrawn October 1964; scrapped 2/1965. |
| Aboukir | LMS 5681 | 4-6-0 | |||
| Aboyeur | LNER 148 | Darlington 2067 | 5/1947 | 4-6-2 | Became BR 60148; wd 6/1965; scr 8/1965. |
| Acheron | GWR | 2-2-2 | |||
| Acheron | GWR | 2-4-0 | |||
| Achilles | GWR | 2-2-2 | |||
| Achilles | GWR 3031 | 3/1894 | 4-2-2 | Withdrawn 7/1912. | |
| Achilles | LMS 5697 | 4-6-0 | |||
| Achilles | SDR | 0-6-0ST | |||
| Actaeon | GWR | 2-2-2 | |||
| Acton Burnell Hall | GWR 6991 | Swindon | 11/1948 | 4-6-0 | Became BR 6991; Withdrawn December 1965; scrapped 5/1966. |
| Acton Hall | GWR 4982 | Swindon | 1/1931 | 4-6-0 | Became BR 4982; Withdrawn December 1963; sent to Woodham Brothers scrapyard June 1964; s Birmingham Railway Museum, moved there October 1970. |
| Ada | LVR | 0-6-0ST | |||
| Adam Woodcock | NBR 428 | Cowlairs | 8/1915 | 4-4-0 | Became LNER 9428 in 1921; rn 2437 in 1946; became BR 62437; wd 6/1958; scr 11/1958 at Kilmarnock. |
| Addax | LNER 1024 | Darlington 2004 | 4/1947 | 4-6-0 | Became BR 61024; wd 5/1966; scr 8/1966. |
| Adderley Hall | GWR 4901 | 12/1928 | 4-6-0 | Withdrawn September 1960; scr at Swindon | |
| Adelaide | GWR 3394 | 6/1901 | 4-4-0 | Rb 9/1910; denamed 11/1910; Rn 4140; rb 12/1914; rb 9/1917; withdrawn 4/1929. | |
| Aden | GWR 3395 | 7/1901 | 4-4-0 | Rb 2/1910; rb 6/1913; rn 4141; withdrawn 2/1930. | |
| Aeolus | GWR | 2-2-2 | |||
| Aerolite | NER 66 | Gateshead | 2-2-4T | Became LNER 66 in 1921; wd 5/1934; preserved at the National Railway Museum. | |
| Agamemnon | GWR 3032 | 7/1894 | 4-2-2 | Rb 3/1911; withdrawn 10/1913. | |
| Agamemnon | LMS 5693 | 4-6-0 | |||
| Agenoria | F & Rastrick | 1829 | 0-4-0 | Remained in service for about 30 years; now on exhibit at the National Railway Museum, York, England. | |
| Airborne | LNER 511 | Doncaster 2002 | 7/1946 | 4-6-2 | Became BR 60511; wd 11/1962; scr 4/1963 at Doncaster. |
| Aisne | NBR 631 | Cowlairs | 3/1890 | 0-6-0 | Transferred to LNER in 1921; rn 9631 in 11/1925; wd and scr 3/1939. |
| Ajax | GWR | 2-2-2 | |||
| Ajax | GWR | 0-6-0 | |||
| Ajax | LMS 5689 | 4-6-0 | |||
| Ajax | SDR | 0-6-0ST | |||
| Albert | NBR 647 | Cowlairs | 2/1891 | 0-6-0 | Transferred to LNER in 1921; rn #9647 in 6/1925; rn 5223 in 1946; wd 9/1947; scr 12/1947. |
| Albert Hall | GWR 4983 | 4-6-0 | |||
| Alberta | LMS 5562 | 4-6-0 | |||
| Albion | GWR 2971 | 4-6-0 | |||
| Albrighton Hall | GWR 4984 | 4-6-0 | |||
| Alcazar | LNER 136 | Darlington 2055 | 11/1948 | 4-6-2 | Became BR 60136; wd 5/1962; scr 5/1963 at Doncaster. |
| Aldenham Hall | GWR 4902 | 4-6-0 | |||
| Alderney | SR 85 | 4-4-0 | |||
| Alexander | GWR | 2-4-0 | |||
| Alexander Reith Gray | LNER 1242 | NBL 26143 | 10/1947 | 4-6-0 | Officially named in 12/1947; became BR 61242; wd 6/1964; scr 11/1964; tender converted to a snowplow. |
| Alfred Baldwin | GWR 3363 | 4-4-0 | |||
| Alfred the Great | BR 70009 | Crewe | 3/1951 | 4-6-2 | Withdrawn January 1967; scr June 1967 |
| Allan-Bane | GCR 1399 | A Whitworth 614 | 11/1924 | 4-4-0 | Became LNER 6399 in 1921; rn 2692 in 1946; became BR 62692; wd 11/1959; scr 2/1960. |
| Allenby | NBR 611 | Cowlairs | 8/1892 | 0-6-0 | Transferred to LNER in 1921; rn #9611 in 3/1924; rn 5268 in 1946; became BR 65268; wd 11/1962; scr 1/1963 at Inverurie. |
| Allesley Hall | GWR 4985 | 4-6-0 | |||
| Alligator | GWR | 0-6-0 | |||
| Alma (1st) | GWR | 4-2-2 | |||
| Alma (2nd) | GWR | 4-2-2 | |||
| Alnwick Castle | LNER 2822 | Darlington | 1/1931 | 4-6-0 | Rn 1622 in 1946; became BR 61622; wd 9/1958; scr 9/1958 at Doncaster. |
| Alverstone | SR 29 | 0-4-4T | Operated on the Isle of Wight | ||
| Amadis | LNER 149 | Darlington 2068 | 5/1949 | 4-6-2 | Became BR 60149; wd 6/1964; scr 1/1965. |
| Amazon (1st) | GWR | 4-2-2 | |||
| Amazon (2nd) | GWR | 4-2-2 | |||
| Amphion | GWR | 0-6-0 | |||
| Andrew Bain | LNER 6848 | NBL 22562 | 10/1920 | 4-4-0 | Rn 2276 in 1946; became BR 62276; wd 9/1966; scr 11/1966 at Kilmarnock. |
| Andrew K. McCosh | LNER 4494 | 4-6-2 | |||
| Anson | LMS 5672 | 4-6-0 | |||
| Antelope | GWR | 2-2-2 | |||
| Antelope | SDR | 4-4-0ST | |||
| Anthony Manor | GWR 7801 | 4-6-0 | |||
| Antiquary | GWR | 4-4-0 | |||
| Anzac | BR 70046 | Crewe | 6/1954 | 4-6-2 | Named in December 1959; withdrawn July 1967; scr January 1968 |
| Apollo | BR 70015 | Crewe | 6/1951 | 4-6-2 | Withdrawn August 1967; scr February 1968 |
| Apollo | GWR | 2-2-2 | |||
| Aquarius | GWR | 2-4-0 | |||
| Arab | GWR | 2-2-2 | |||
| Arbury Hall | GWR 5986 | 4-6-0 | |||
| Archibald Sturrock | LNER 118 | Doncaster 2035 | 11/1948 | 4-6-2 | Officially named 7/1950 at Doncaster; became BR 60118; wd 10/1965; scr 11/1965. |
| Ardingly | SR 917 | 4-4-0 | |||
| Arethusa | LMS 5696 | 4-6-0 | |||
| Argyll | C&MLR | Barclay 1049 | 1906 | 0-6-2T | |
| Argyll and Sutherland Highlander | LMS 6107 | 4-6-0 | |||
| Argyllshire | LNER 270 | Darlington | 1/1928 | 4-4-0 | Rn 2708 in 1946; became BR 62708; wd 5/1959; scr 5/1959 at Darlington. |
| Ariadne | GWR | 0-6-0 | |||
| Ariel | BR 70016 | Crewe E498/220 | 6/1951 | 4-6-2 | Wd 8/1967; scr 2/1968 |
| Ariel | GWR | 2-2-2 | |||
| Aries | GWR | 2-4-0 | |||
| Argo | GWR | 0-6-0 | |||
| Argo | SDR | 0-6-0ST | |||
| Argus | GWR | 2-2-2 | |||
| Arley Hall | GWR 6901 | 4-6-0 | |||
| Arlington Court | GWR 2931 | 4-6-0 | |||
| Arlington Grange | GWR 6800 | 4-6-0 | |||
| Armada | LMS 5679 | 4-6-0 | |||
| Armington | LBSCR 570 | 0-6-2T | Rebuilt with a larger boiler in 1911; denamed on application of the umber livery. | ||
| Arras | NBR 643 | Cowlairs | 2/1891 | 0-6-0 | Transferred to LNER in 1921; rn 9643 in 12/1924; rn 5219 in 1946; wd 7/1947; scr 8/1947. |
| Arrow | BR 70017 | Crewe | 6/1951 | 4-6-2 | Wd 9/1966; scr 1/1967. |
| Arrow | GWR | 2-2-2 | |||
| Arsenal | LNER 2848 | Darlington | 3/1936 | 4-6-0 | Rn 1648 in 1946; became BR 61648; wd 12/1958; scr 4-1959 at Doncaster. |
| Ashburnham | BP&GV | 0-6-0T | Became Great Western 2192 | ||
| Ashey | SR 28 | 0-4-4T | Operated on the Isle of Wight | ||
| Ashford Hall | GWR 5966 | 4-6-0 | |||
| Ashley Grange | GWR 6824 | 4-6-0 | |||
| Ashton Court | GWR 2932 | 4-6-0 | |||
| Ashwicke Hall | GWR 5976 | 4-6-0 | |||
| Aske Hall | LNER 2827 | Darlington | 3/1931 | 4-6-0 | Rn 1627 in 1946; became BR 61627; wd 7/1959; scr 7/1959 at Doncaster. |
| Assagais | GWR | 2-2-2 | |||
| Assam | LMS 5583 | 4-6-0 | |||
| Astley Hall | GWR 4903 | 4-6-0 | |||
| Aston Hall | GWR 4986 | 4-6-0 | |||
| Atlantic | C&MLR | Barclay 1098 | 1907 | 0-6-2T | |
| Atlas | GWR | 2-2-2 | |||
| Atlas | LMS 5737 | 4-6-0 | |||
| Atlas | SDR | 0-6-0ST | |||
| Audley End | LNER 2806 | NBL 23809 | 12/1928 | 4-6-0 | Rn 1606 in 1946; became BR 61606; wd 9/1958; scr 9/1958 at Doncaster. |
| Auld Reekie | LNER 160 | Doncaster 2054 | 12/1949 | 4-6-2 | Became BR 60160; wd 12/1963; scr 3/1964 at Darlington. |
| Auld Reekie | NBR 872 | NBL 17373 | 7/1906 | 4-4-2 | Became LNER 9872 in 1921; wd 8/1935; scr 9/1935. |
| Aurora | GWR | 2-2-2 | |||
| Aurora | SDR | 4-4-0ST | |||
| Australia | GWR 3393 | 4-4-0 | |||
| Australia | LMS 5563 | 4-6-0 | |||
| Avalanche | GWR | 0-6-0ST | |||
| Avon | GWR | 0-6-0 | |||
| Avonside | GWR | 2-4-0 | |||
| Aylburton Grange | GWR 6801 | 4-6-0 | |||
| Ayrshire Yeomanry | LMS 5156 | 4-6-0 | |||
| Azalia | GWR | 2-4-0T |