Name Acronym Date Type* Location Association
(*G–Governmental; I–Institutional; Pr–Private; Pu–Public; S–School & U–University)
| Acfield’s Observatory | AcO | 1970-1975 | Pr | Northumberland | Acfield, Frank |
| Acre Road Observatory | AROUG | 1969- | U | Lanarkshire | University of Glasgow |
| Adams’s Hambledon Observatory | AHO | 1904-c.1916 | Pr | Surrey | Adams, John Franklin- |
| Adams’s Machrihanish Observatory | AMOA | 1897-1904 | Pr | Argyllshire | Adams, John Franklin- |
| Airdrie Observatory | AirO | 1896-1924 | I | Lanarkshire | Airdrie Art Centre |
| Airdrie Public Observatory | APO | 1925- | I | Lanarkshire | Airdrie Astronomical Association (AAA) |
| Aldershot Observatory | AlO | 1906- | I | Hampshire | Alexander, Patrick Young |
| Alexander Observatory | see Aldershot Observatory [AlO] | ||||
| Alston Observatory | AsO | 1955- | U | Lancashire | University of Central Lancashire |
| Amateur Astronomy Centre | See (The) Astronomy Centre [TAC] | ||||
| Armagh Observatory | AO | 1789- | I | Armagh | Robinson, Thomas Romney |
| Ashmolean Museum Observatory | AMO | 1730-1735 | U | Oxfordshire | Bradley, James |
| Aston University Observatory | AUOB | 2000- | I/U | Warwickshire | Birmingham Astronomical Society; Aston University |
| Astrocampus Observatory | ACOY | 2015- | Pu/U | Yorkshire: North Riding | University of York |
| (The) Astronomy Centre | TAC | 1982 | Pu | Lancashire | The Astronomy Centre |
| Athenaeum Club Observatory | AtCO | 1858 – | I | Suffolk | Athenaeum Club |
| Atkinson’s Observatory | AtO | 1896 (c.) | Pr | Glamorgan | Atkinson, George A.S. |
| Aubert’s Observatory | See Aubert’s Deptford Observatory [AODL] | ||||
| See Aubert’s Highbury Observatory [AOHL] | |||||
| Aubert’s Deptford Observatory | AODL | 1769-1788 | Pr | County of London | Aubert, Alexander |
| Aubert’s Highbury Observatory | AOHL | 1788-1806 | Pr | County of London | Aubert, Alexander |
| Aytoun Observatory | AyO | 1864- ? | Pr | Perthshire | Watson, William Livingstone |
| Backhouse’s Observatory | BaO | 1863/4-1920 | Pr | Durham | Backhouse, T. W. |
| Barclay’s Observatory | See Barclay’s Bury Hill Observatory [BBHO] | ||||
| See Barclay’s Leyton Observatory [BOLE] | |||||
| Barclay’s Bury Hill Observatory | BBHO | 1848-1855 | Pr | Surrey | Barclay, Arthur Kett |
| Barclay’s Leyton Observatory | BOLE | 1854-1886 | Pr | Essex | Barclay, Joseph Gurney |
| Barron’s Observatory | BOMK | 1919-1924 | Pr | Somerset | Barron, Robert Percy |
| Barry Astronomical Society Observatory | BASO | 1914-? | I | Glamorgan | Barry Astronomical Society (BarAS) |
| Battlesteads Observatory | BOWH | c.2015- | Pu | Northumberland | Battlesteads Hotel & Resaurant |
| Baxendell’s Observatory | BxO | 1877-1887 | Pr | Lancashire | Baxendell, Joseph |
| Bayfordbury Observatory | BOB | 1967- | U | Hertfordshire | Hatfield Polytechnic; University of Hertfordshire |
| Beacon Hill Observatory | BHO | 1974- | I | Lincolnshire | Cleethorpes & District Astronomical Society |
| Beaufoy’s Observatory | See Beaufoy’s Bushey Observatory [BeOBH] | ||||
| See Beaufoy’s Hackney Wick Observatory [BHWO] | |||||
| Beaufoy’s Bushey Observatory | BeOBH | 1816-1827 | Pr | Hertfordshire | Beaufoy, Mark |
| Beaufoy’s Hackney Wick Observatory | BHWO | c.1795-1815 | Pr | County of London | Beaufoy, Mark |
| Bennett’s Observatory | BeO | 1922-1937 | Pr | Suffolk | Bennett, A. F. |
| Bermerside Observatory | BO | 1867-1894 | Pr | Yorkshire – West Riding | Crossley, Edward |
| Berthon’s Romsey Observatory | BRO | 1860-1892 | Pr | Hampshire | Berthon,Edward L. |
| Bidston Observatory | BiO | 1866-1960s | I/U | Cheshire | Hartnup, J.C.; Liverpool City Council; Mersey Dock & Harbour Board; University of Liverpool |
| Birkdale Observatory | see Whitelow’s Birkdale Observatory [WBO] | ||||
| Birr Castle | see Birr Castle Observatory [BCO] | ||||
| Birr Castle Observatory | BCO | 1840-1914; 1999- | Pr | Offaly | Copeland, R.; Parsons, Lawrence 4th earl of Rosse; Parsons, W., 3rd earl of Rosse; Rambaut, William Hautenville; Stoney, George Johnstone |
| Bishop’s Observatory | See Bishop’s Regent Park Observatory [BORP] | ||||
| See Bishop’s Meadowbank Observatory [BMO] | |||||
| Bishop’s Regent Park Observatory | BORP | 1836-1861 | Pr | County of London | Bishop, George |
| Bishops Meadowbank Observatory | BMO | 1861-1877 | Pr | Middlesex | Bishop, George (Jnr); Talmage; George; Hind; John |
| Blackford Hill Observatory | see Royal Observatory, Edinburgh [ROE] | ||||
| Blenheim Palace Observatory | BPO | 1772-1800 | Pr | Oxfordshire | Spencer, George, 4h Duke of Marlborough |
| Blundell’s School Observatory | BSO | 1985- | S | Devon | Blundell School |
| Boles’s Observatory | BolO | 2001- | Pr | Suffolk | Boles, Tom |
| Bootham School Observatory | BSO | 1852- | S | Yorkshire: North Riding | Bootham School |
| Boreham’s Observatory | BorO | 1850-1859 | Pr | Suffolk | Boreham, William W.; Newnham College, Cambridge |
| Bradley’s Observatory | BrO | 1727-1747 | Pr | Essex | Bradley, James; Pound, James |
| Brecklands Astronomical Society Observatory | BASOG | 2000- | I | Norfolk | Brecklands Astronomical Society |
| Brian Joynes Observatory | BJO | 2000- | I | Yorkshire: West Riding | Doncaster Astronomical Society |
| Brisbane’s House Observatory | See Brisbane’s Largs Observatory [BOMH] | ||||
| See Brisbane’s Makerstoun Observatory [BOBH] | |||||
| Brisbane’s Observatory | See Brisbane’s Largs Observatory [BOMH] | ||||
| See Brisbane’s Makerstoun Observatory [BOBH] | |||||
| Brisbane’s Largs Observatory | BOBH | 1808-1860 | Pr | Ayrshire | Brisbane, Sir Thomas Makdougall |
| Brisbane’s Makerstoun Observatory | BOMH | 1826-1860) | Pr | Roxburghshire | Brisbane, Sir Thomas Makdougall |
| Brisco Owen Observatory | BOO | 1920s-1960/70s | Pr | Caernarvonshire | Owen, Arthur E. Brisco |
| Brocklebank Observatory | BOUCL | 1932-1938 | U | County of London | University College, London |
| Brodie’s Observatory | See Brodie’s Eastbourne Observatory [BOE] | ||||
| See Brodie’s Fernhill Observatory [BFO] | |||||
| See Brodie’s Uckfield Observatory [BUO] | |||||
| See Brodie’s Wadbury Observatory [BWO] | |||||
| Brodie’s Eastbourne Observatory | BOE | 1854-1858 | Pr | Sussex | Brodie, Frederick |
| Brodie’s Fernhill Observatory | BFO | 1880-1910s | Pr | Isle of Wight | Brodie, Frederick |
| Brodie’s Uckfield Observatory | BUO | 1858-1876 | Pr | Sussex | Brodie, Frederick |
| Brodie’s Wadbury Observatory | BWO | 1853-1854 | Pr | Somerset | Brodie, Frederick |
| Brough Astronomy Observatory | BAOB | 1990- | I | Yorkshire: East Riding | Brough Astronomy; Blackburn Leisure Astronomy Society |
| Browne’s Observatory | BOWL | 1825-1828 | Pr | County of London | Browne, Henry |
| Bruce Kingsley’s Observatory | BKO | 2008- | Pr | Berkshire | Kingsley, Bruce; Moore, Patrick |
| Buckingham’s Observatory | BOWL | 1861-1862 | Pr | County of London | Buckingham, James |