| Abingdon Astronomical Society | Abingdon | 2nd Monday monthly Sep-Jun, 8:00 pm | - |
| Stratford-Upon-Avon Astronomical Society | Alderminster | 3rd Tuesday monthly, Alderminster Village Hall | - |
| Farnham Astronomical Society | Aldershot | 2nd Tuesday monthly, 7:30 pm | - |
| South East Kent Astronomical Society | Alkham | 2nd Thursday monthly except Aug, 7:30 pm | - |
| Altrincham & District Astronomical Society | Altrincham | 1st Friday monthly Sep-Jun, 8:00 pm | - |
| Northumberland Astronomical Society | Amble | 2nd Thursday monthly, 7:30 pm (plus a last-Thursday session) | Hauxley Observatory, Low Hauxley |
| Doncaster Astronomical Society | Austerfield | Brian Joynes Observatory, Austerfield Field Study Centre | Brian Joynes Observatory, Austerfield |
| Aylesbury Astronomical Society | Aylesbury | 1st Monday monthly (next Monday if bank holiday), 7:30 pm | Winchendon Observatory, near Aylesbury |
| North Devon Astronomical Society | Barnstaple | 1st Wednesday monthly, 7:30 pm | - |
| Bath Astronomers | Bath | Last Wednesday monthly Sep-Jun, 7:30 pm | - |
| William Herschel Society | Bath | Lectures and events at the Herschel Museum of Astronomy, 19 New King Street | - |
| Bedford Astronomical Society | Bedford | Last Wednesday monthly, 7:15 pm | Piazzi Smyth Observatory, Bedford |
| East Riding Astronomers | Beverley | 1st Monday monthly except Jun-Jul, 7:00 pm | - |
| East Sussex Astronomical Society | Bexhill-on-Sea | 1st Thursday monthly, 8:00 pm | - |
| Birmingham Astronomical Society | Birmingham | Weekly Wednesdays, 8:00 pm | - |
| University of Birmingham Astronomical Society | Birmingham | Student society (AstroSoc), University of Birmingham campus | - |
| Bishop Auckland Astronomical Society | Bishop Auckland | 1st Friday monthly except Jan and Aug, 7:00 pm | - |
| Blackpool & District Astronomical Society | Blackpool | 2nd Wednesday monthly, 8:00 pm (doors 7:30) | - |
| Bradford Astronomical Society | Bradford | Alternate Mondays, Idle and Thackley Conservative Club | - |
| Mid-Kent Astronomical Society | Bredhurst | 2nd and last Friday monthly, 8:00 pm | Field behind Bredhurst Village Hall, Bredhurst |
| Brighton Astro | Brighton | 1st Thursday monthly except Jan, 7:00 pm | - |
| Bristol Astronomical Society | Bristol | Weekly talks and meetings most of the year, Bristol Photographic Society | Failand Observatory, Failand near Bristol |
| Bromsgrove Astronomical Society | Bromsgrove | 3rd Monday monthly, Bromsgrove Rugby Club | - |
| Brough Astronomy Club | Brough | 4th Monday monthly, 7:30 pm | Brough Observatory, Brough |
| East Essex Astronomy Club | Burnham-on-Crouch | Usually 3rd Tuesday monthly Oct-Jun, Burnham-on-Crouch Village Hall | - |
| Cambridge Astronomical Association | Cambridge | 3rd Friday monthly, 8:00 pm | - |
| Stour Astronomical Society | Cavendish | 1st Tuesday monthly, Cavendish Memorial Hall | - |
| Ewell Astronomical Society | Cheam | 2nd Friday monthly (no August), 8:00 pm | Nonsuch High School Observatory, Cheam |
| Cotswold Astronomical Society | Cheltenham | 2nd Saturday monthly, 7:30 pm | - |
| Nene Valley Astronomical Society | Chelveston | Club night 1st Monday monthly, 8:00 pm | - |
| Chesterfield Astronomical Society | Chesterfield | Fridays, 8:00 pm | Barnett Observatory, Chesterfield |
| South Downs Astronomical Society | Chichester | 1st Friday monthly (no August), 7:30 pm | - |
| Wiltshire Astronomical Society | Chippenham | 1st Tuesday monthly Sep-Jun, 7:30 pm | - |
| Chipping Norton Amateur Astronomy Group | Chipping Norton | 3rd Monday monthly (2nd Monday in December), 7:30 pm | - |
| Rugby & District Astronomical Society | Church Lawford | 4th Sunday monthly, Church Lawford Village Hall | - |
| Clacton & District Astronomical Association | Clacton-on-Sea | 1st Thursday monthly except Aug, 7:30 pm | - |
| Hampshire Astronomical Group | Clanfield | 2nd Friday monthly, 8:00 pm | Clanfield Observatory, Clanfield |
| Cleethorpes & District Astronomical Society | Cleethorpes | 1st Wednesday monthly, 7:30 pm | - |
| Basingstoke Astronomical Society | Cliddesden | 4th Thursday monthly Sep-Jun, 7:00 pm | - |
| Cockermouth Astronomical Society | Cockermouth | Last Tuesday monthly except Jul, Aug and Dec | - |
| Wycombe Astronomical Society | Coleshill | 3rd Wednesday monthly, 8:00 pm | Woodrow House Observatory, near Amersham |
| Hull & East Riding Astronomical Society | Cottingham | 2nd Monday monthly except Jul-Aug, 7:30 pm | - |
| Coventry & Warwickshire Astronomical Society | Coventry | 2nd Friday monthly, 7:00 pm | - |
| Cranbrook and District Science and Astronomical Society | Cranbrook | 2nd Monday monthly Oct-May (school term), 8:00 pm | Cranbrook School Observatory, Cranbrook |
| Cranfield Astronomical Society | Cranfield | Thursdays during university term (Oct-Easter), 7:30 pm | Loxham Observatory, Cranfield |
| Crawley Astronomical Society | Crawley Down | 3rd Friday monthly Sep-Jun (2nd Friday in December), 7:30 pm | Copthorne Observatory, Copthorne |
| South Cheshire Astronomical Society | Crewe | 3rd Thursday monthly Sep-May, 7:00 pm | - |
| Croydon Astronomical Society | Croydon | 1st and 3rd Fridays in school term, 7:30 pm | Kenley Observatory, Kenley |
| Derby & District Astronomical Society | Derby | 1st Friday monthly except Jul-Aug, 7:30 pm | Flamsteed Observatory, near Derby |
| West Didsbury Astronomical Society | Didsbury | 2nd Monday monthly except Aug, 7:00 pm | - |
| Knowle Astronomical Society | Dorridge | 1st Monday monthly, Dorridge Village Hall | - |
| Durham Astronomical Society | Durham | 4th Friday monthly Sep-Jun except Dec, 7:30 pm | - |
| Scarborough & Ryedale Astronomical Society | East Ayton | 3rd Friday monthly (no August), 7:45 pm | Dalby Forest |
| Edenbridge & District Astronomers | Edenbridge | - | - |
| North Norfolk Astronomy Society | Fakenham | Speaker evenings at Hempton Memorial Hall, The Green | Society observatory near Wiveton |
| Heart Of England Astronomical Society | Furnace End | Weekly at the society's restored Old Telephone Exchange, Furnace End | Old Telephone Exchange observatory, Furnace End |
| Melton & District Astronomical Society | Gaddesby | Friday observing sessions, 7:30 pm | Gaddesby Village Hall, Gaddesby |
| Macclesfield Astronomical Society | Goostrey | 3rd Tuesday monthly, 8:00 pm | - |
| Breckland Astronomical Society | Great Ellingham | 2nd Friday monthly, 7:15 pm | Breckland Astronomical Observatory, Great Ellingham |
| Flamsteed Astronomy Society | Greenwich | Monthly lecture meetings, National Maritime Museum / Royal Observatory Greenwich | - |
| Guildford Astronomical Society | Guildford | 1st Thursday monthly lecture meeting, University of Surrey | - |
| Castle Point Astronomy Club | Hadleigh | Most Wednesdays except Jul-Aug, 8:00 pm | - |
| Harrogate Astronomical Society | Harrogate | Last Thursday monthly (no Aug or Dec), 7:30 pm | - |
| West of London Astronomical Society | Harrow | Monthly Mondays (no August), 8:00 pm | Dark-sky sessions near High Wycombe |
| Hertford Astronomy Group | Hatfield | 2nd Wednesday monthly Sep-Jun, Lindop Building | - |
| Ilkeston & District Astronomical Society | Heanor | Last Wednesday monthly, 8:00 pm | Shipley Country Park, Heanor |
| Cornwall Astronomy Society | Helston | 2nd Tuesday monthly, 8:00 pm | - |
| Herefordshire Astronomical Society | Hereford | 1st Thursday monthly Sep-Jul, 7:00 pm | Lugg Meadows, near Hereford |
| Wealden Astronomers | Herstmonceux | 4th Friday monthly, 7:00 pm | Herstmonceux Castle grounds, Herstmonceux |
| Thurrock Astronomy Society | Horndon-on-the-Hill | 1st Wednesday monthly, 7:30 pm | - |
| Horsham Astronomy Group | Horsham | 1st Wednesday monthly, The Forest School | - |
| Huddersfield Astronomical Society | Huddersfield | 1st Tuesday monthly, Lockwood Park Bowling Pavilion | - |
| Andover Astronomical Society | Hurstbourne Tarrant | 3rd Thursday monthly Sep-Apr, 7:30 pm | - |
| Eddington Astronomical Society | Kendal | 1st Thursday monthly except Jun-Jul, 7:00 pm | - |
| Carolian Astronomy Society | Kidderminster | 2nd Wednesday monthly Sep-Jul, 7:30 pm | - |
| Kielder Observatory Astronomical Society | Kielder | Kielder Observatory, Black Fell | Kielder Observatory, Kielder |
| Leeds Astronomical Society | Leeds | 2nd Wednesday monthly, Quaker Meeting House | - |
| Leicester Astronomical Society | Leicester | 2nd Tuesday monthly except Dec, 7:30 pm | - |
| Letchworth & District Astronomical Society | Letchworth Garden City | Last Wednesday monthly except Dec, 7:30 pm | Letchworth Observatory, Standalone Farm, Letchworth |
| Lewes Astronomical Society | Lewes | 1st Wednesday monthly except Jul-Aug, 7:30 pm | - |
| Swindon Stargazers | Liddington | 3rd Friday monthly, Liddington Village Hall | - |
| Lincoln Astronomical Society | Lincoln | 1st Tuesday monthly (2nd Tuesday in January), 7:30 pm | - |
| St Neots Astronomy Association | Little Paxton | 1st Monday monthly (2nd if bank holiday), 7:30 pm | Paxton Pits Nature Reserve, Little Paxton |
| Liverpool Astronomical Society | Liverpool | 3rd Friday monthly (no Jun-Aug; 2nd Friday in December), 7:00 pm | Society observatory at Pex Hill, Widnes |
| Amateur Telescope Makers of London | London | Fortnightly Wednesdays, 8:00 pm | - |
| Astronomical Society of Haringey | London | 3rd Thursday monthly Sep-Jun (no December), currently online while a new venue is found | - |
| Baker Street Irregular Astronomers | London | Monthly public observing sessions, The Hub | - |
| British Astronomical Association | London | Meetings in London and regional weekend meetings; many online | - |
| Hampstead Garden Suburb Astronomical Society | London | Last Wednesday monthly (no December), 7:30 pm | - |
| Hampstead Scientific Society | London | Hampstead Observatory, Lower Terrace | - |
| Royal Astronomical Society | London | Burlington House, Piccadilly | - |
| Luton Astronomical Society | Luton | Last Thursday monthly except Dec, 7:15 pm | Putteridge Bury Observatory, Luton |
| Maidenhead Astronomical Society | Maidenhead | 1st Friday monthly except Jul-Aug, 7:30 pm | - |
| Manchester Astronomical Society | Manchester | Thursdays, Blackett Lecture Theatre | Godlee Observatory, Manchester |
| Mexborough & Swinton Astronomical Society | Mexborough | Thursdays, 7:30 pm | - |
| Milton Keynes Astronomical Society | Milton Keynes | Fridays (alternating talks and informal astromeets), 8:00 pm | - |
| UK Astronomy | Milton Keynes | - | - |
| BOINC UK | multiple | Online only | - |
| Federation of Astronomical Societies (FAS) | multiple | Annual convention | - |
| SAGAS | multiple | - | - |
| Society for Popular Astronomy | multiple | Meetings in London and online | - |
| Society For The History Of Astronomy | multiple | Spring conference and autumn AGM meetings | - |
| UK Amateur Radio Astronomy Network | multiple | - | - |
| Webb Deep-Sky Society | multiple | Annual meeting | - |
| York Astronomical Society | Murton | 1st and 3rd Fridays monthly (no August), 7:30 pm | Beetle Bank Farm Observatory, Murton |
| Orwell Astronomical Society (Ipswich) | Nacton | Lectures and members meetings at Orwell Park Observatory, Orwell Park School | Orwell Park Observatory, Nacton |
| Newbury Astronomical Society | Newbury | 1st Friday monthly Sep-Jun, 7:30 pm | - |
| Newcastle Astronomical Society | Newcastle upon Tyne | 3rd Thursday monthly Sep-May, 7:00 pm | - |
| Vectis Astronomical Society | Newchurch | 4th Friday monthly except Dec, 7:30 pm | Vectis Astronomical Society observatory, Newchurch |
| Mid-Cheshire Astronomical Group | Norley | Last Friday monthly except Jul, 7:30 pm | - |
| Northampton Natural History Society | Northampton | Astronomy Section: two Monday evenings monthly, 7:30 pm | - |
| Crewkerne & District Astronomical Society | Norton-sub-Hamdon | 3rd Wednesday monthly, 7:30 pm | - |
| Wells & Mendip Astronomers | Oakhill | Monthly Saturdays, 7:30 pm | - |
| Walton Astronomy Group | Ockham | Monthly Thursday (usually 2nd or 3rd, by Moon phase) | - |
| Somerset Levels Stargazers | Othery | Last Wednesday monthly (no December), 7:30 pm | - |
| Lowestoft & Yarmouth Regional Astronomers | Oulton | 2nd Tuesday monthly, Coach House Room | - |
| Preston and District Astronomical Society | Penwortham | 2nd Thursday monthly except Dec, 7:30 pm | Jeremiah Horrocks Observatory, Moor Park, Preston |
| Peterborough Astronomical Society | Peterborough | 1st Thursday monthly, 7:00 pm | Sacrewell Heritage Farm, Thornhaugh |
| Orpington Astronomical Society | Petts Wood | 4th Wednesday monthly (3rd in Dec), 7:45 pm | Otford Village Memorial Hall field, Otford |
| Plymouth Astronomical Society | Plymouth | 2nd Friday monthly Sep-Jul, 7:30 pm | - |
| Heaton Park Astronomy Group | Prestwich | Thursdays Oct-Mar, 7:00 pm | - |
| Reading Astronomical Society | Reading | 3rd Saturday monthly Sep-Jun, St Peter's Church Hall | - |
| Redditch Astronomical Society | Redditch | 1st Tuesday monthly, Windmill Community Centre | - |
| Reeth Informal Astronomy Group | Reeth | 2nd Thursday monthly (no Jun-Jul), 8:00 pm | - |
| South West Herts Astronomical Society | Rickmansworth | Last Friday monthly Sep-May (term time), 8:00 pm | High Top Observatory |
| Fordingbridge Astronomers | Ringwood | Usually 3rd Wednesday monthly except Dec, The Elm Tree | - |
| North Essex Astronomical Society (NEAS) | Rivenhall | 3rd Wednesday monthly except Aug, 8:00 pm (doors 7:30) | - |
| Shropshire Astronomical Society | Rodington | 3rd Saturday monthly, 7:30 pm | - |
| Rosliston Astronomy Group | Rosliston | 2nd Friday monthly (talk) and late-month Friday meeting, 7:30 pm | Peter Bolas Observatory, Rosliston Forestry Centre |
| Walsall Astronomical Society | Rushall | Weekly Thursdays, 8:00 pm | - |
| Salford Astronomical Society | Salford | Most Wednesdays, 7:30 pm | Salford Observatory, Salford |
| East Lincolnshire Astronomy Club (ELAC) | Scamblesby | Monthly Saturday observing nights, 7:30 pm | Badger Farm, Scamblesby |
| Sheffield Astronomical Society | Sheffield | 2nd Tuesday monthly, 7:45 pm | - |
| Norman Lockyer Astronomical Society | Sidmouth | Fridays, 7:30 pm | Norman Lockyer Observatory, Sidmouth |
| Herschel Astronomical Society | Slough | 2nd Friday monthly, 7:30 pm | - |
| Solent Amateur Astronomers | Southampton | 3rd Tuesday monthly (2nd in Dec), 7:30 pm | Toothill Observatory, near Romsey |
| Southampton Astronomical Society | Southampton | 2nd Thursday monthly except Aug, 7:30 pm | - |
| Southport Astronomical Society | Southport | 3rd Thursday monthly, 7:30 pm | Hesketh Park Observatory, Southport |
| Keighley Astronomical Society | Steeton | 4th Thursday monthly (no Jul-Aug), 7:30 pm | - |
| North Staffordshire Astronomical Society | Stoke-on-Trent | 1st Tuesday monthly, 21st Hartshill Scout Group HQ | - |
| Kernow Astronomers | Summercourt | 3rd Thursday monthly, 7:30 pm | - |
| Starquest Astronomy Club | Sutton Veny | 2nd Thursday monthly (no Jun-Aug), 7:00 pm | - |
| Crayford Manor House Astronomical Society | Sutton-at-Hone | Thursdays except Christmas week, 7:45 pm | Dick Chambers Sutton-at-Hone Observatory, Sutton-at-Hone |
| Mansfield & Sutton Astronomical Society | Sutton-in-Ashfield | Sherwood Observatory, Coxmoor Road | Sherwood Observatory, Sutton-in-Ashfield |
| South Somerset Astronomical Society | Taunton | 1st Tuesday monthly Sep-May, 7:30 pm | - |
| Loughton Astronomical Society | Theydon Bois | Thursdays, 8:00 pm | - |
| Cleveland & Darlington Astronomical Society | Thorpe Thewles | 2nd Friday monthly Sep-Jun, 7:30 pm | Jack Youdale Observatory, Wynyard, Thorpe Thewles |
| Norwich Astronomical Society | Thwaite St Mary | Meetings at Seething Observatory, Toad Lane | Seething Observatory, Thwaite St Mary |
| The Astronomy Centre | Todmorden | Saturdays, public sessions 6:00 pm (juniors) | The Astronomy Centre, Bacup Road, near Todmorden |
| Torbay Astronomical Society | Torquay | Monthly Thursday talks, 7:30 pm | Torquay Boys' Grammar School Observatory, Torquay |
| King's Lynn & District Astronomy Society | Tottenhill | 2nd Monday monthly, 7:30 pm | - |
| Wadhurst and Tunbridge Wells Astronomical Society | Tunbridge Wells | 3rd Wednesday monthly except Aug and Dec, 7:30 pm | - |
| Havering Astronomical Society | Upminster | 3rd Wednesday monthly except Aug, 7:15 pm | - |
| Wakefield & District Astronomical Society | Wakefield | 1st Tuesday monthly, Wakefield Sports Club | - |
| West Yorkshire Astronomical Society | Wakefield | Rosse Observatory, Carr Gate | Rosse Observatory, Carr Gate |
| Sunderland Astronomical Society | Washington | 3rd Sunday monthly, Cygnus Observatory | Cygnus Observatory, Washington Wetland Centre |
| Chester Astronomical Society | Waverton | Last Wednesday monthly except Aug and Dec, 7:00 pm | - |
| Nottingham Astronomical Society | West Bridgford | 1st Thursday monthly (no August), 7:45 pm | Society observatory, Gotham |
| Thanet Astronomy Group | Westgate-on-Sea | Saturdays, 2:00 pm | - |
| Weymouth Astronomy Club | Weymouth | 2nd Friday monthly except Aug, 7:30 pm | - |
| Athenaeum Astronomy Association | Whepstead | Alternate Wednesdays, 7:30 pm | Athenaeum Observatory, Bury St Edmunds |
| Whitby & District Astronomical Society | Whitby | 1st Tuesday monthly, 7:30 pm | - |
| Northants Amateur Astronomers | Wilbarston | 3rd Tuesday monthly, 7:45 pm | - |
| Eastbourne Astronomical Society | Willingdon | 1st Saturday monthly Sep-Jun, 7:30 pm | - |
| Wessex Astronomical Society | Wimborne Minster | 1st Tuesday monthly, Allendale Centre | - |
| Wincham Pickmere & District Astronomy Group | Wincham | 1st Thursday monthly, 7:00 pm | - |
| Wolverhampton Astronomical Society | Wolverhampton | Alternate Mondays autumn-spring (monthly Apr-Jun, none Jul-Aug) | - |
| Ashford Astronomical Society | Woodchurch | Last Friday monthly (3rd Friday in Dec), 7:30 pm | - |
| Bassetlaw Astronomical Society | Worksop | Wednesdays, 8:00 pm | - |
| Worthing Astronomical Society | Worthing | 3rd Wednesday monthly, Emmanuel United Reformed Church | - |
| Wythenshawe Stargazers | Wythenshawe | - | - |