This is a list of, in the United Kingdom, the Crown Dependencies, and British Overseas Territories, schools that only admit girls, or those that only admit girls at certain levels, years, or grades—or those that follow the Diamond Schools model, which separates students by gender at points.

Bedfordshire

• Bedford Girls' School
  • Bedford High School, Bedfordshire and Dame Alice Harpur School merged into Bedford Girls'
• Challney High School for Girls

Berkshire

• The Abbey School, Reading
• Downe House School (Cold Ash)
• Heathfield School, Ascot
• The Marist Schools
• Queen Anne's School
• St Gabriel's School (coed junior school, girls only from ages 12-18)
• St George's School, Ascot
• St Mary's School Ascot
• Windsor Girls' School

Bristol

• Badminton School
• Montpelier High School
• Redmaids' High School
  • Redland High School for Girls and The Red Maids' School merged into Redmaids' High

Buckinghamshire

• Dr Challoner's High School
• Pipers Corner School
• Wycombe Abbey

Cambridgeshire

• St Mary's School, Cambridge

Cheshire

• Alderley Edge School for Girls
• Queen's School, Chester

Cornwall

• Truro High School

County Durham

• Durham High School for Girls

Devon

• Devonport High School for Girls
• The Maynard School
• Torquay Girls' Grammar School

Dorset

• Sherborne School for Girls
• Talbot Heath School

East Riding of Yorkshire

• Newland School for Girls

East Sussex

• Brighton Girls
• Mayfield School, Mayfield (formerly St Leonards-Mayfield School)
• Roedean School

Essex

• Chelmsford County High School for Girls (Grammar - entry by 11+)
• Colchester County High School for Girls (Grammar - entry by 11+)
• Southend High School for Girls (Grammar - entry by 11+)
• Westcliff High School for Girls (Grammar - entry by 11+)
• New Hall School Girls' Senior School
• St Mary's School, Colchester

Gloucestershire

• Cheltenham Ladies' College
• Denmark Road High School
• Ribston Hall High School
• Westonbirt School

Greater London

• James Allen's Girls' School
• Ayesha Siddiqa Girls School
• Blackheath High School
• Bromley High School
• Camden School for Girls
• Channing School
• Chislehurst School for Girls
• City of London School for Girls
• Connaught School for Girls
• Croydon High School
• Eltham Hill School
• Francis Holland School
• Glendower Preparatory School
• Godolphin and Latymer School
• Harris Girls' Academy East Dulwich
• Henrietta Barnett School
• Hornsey School for Girls
• La Retraite Roman Catholic Girls' School
• Lady Eleanor Holles School
• The Laurels School
• Madani Girls' School
• Marymount International School London
• Mulberry School for Girls
• Newstead Wood School
• North London Collegiate School
• Northwood College
• Notting Hill and Ealing High School
• Old Palace School
• Palmers Green High School
• Putney High School
• Queen Elizabeth's School for Girls
• Queen's College, London
• Queen's Gate School
• South Hampstead High School
• St Catherine's School, Twickenham
• St Helen's School
• St James Independent Schools Senior Girls School
• St Margaret's School Hampstead
• St Martin-in-the-Fields High School for Girls
• St Paul's Girls' School
• Streatham and Clapham High School
• Surbiton High School (coeducational ages 4-11, and girls until 18)
• Sutton High School, London
• Sydenham High School
• Tayyibah Girls' School
• Tiffin Girls' School
• Tolworth Girls' School
• Ursuline Preparatory School
• Waldegrave School
• Walthamstow School for Girls
• The Ellen Wilkinson School for Girls
• Wimbledon High School

Greater Manchester

• Altrincham Grammar School for Girls
• Bolton School Single Sex Junior, Senior, and Sixth Form schools
• Bolton Muslim Girls' School
• Bury Grammar School (for girls)
• Fairfield High School for Girls
• Flixton Girls' School
• Manchester High School for Girls
• Whalley Range High School
• Withington Girls' School

Hampshire

• Farnborough Hill
• Portsmouth High School, Southsea
• St Nicholas' School, Hampshire
• St Swithun's School, Winchester

Hertfordshire

• Abbot's Hill School
• Berkhamsted School Separate Girls' Senior School
• Haberdashers' Girls' School (formerly Haberdashers' Aske's School for Girls)
• Hitchin Girls' School
• Queenswood School
• The Royal Masonic School for Girls (Nursery is coeducational but further grades are girls' only)
• St Albans High School for Girls
• St Albans Girls' School
• St Francis' College, Letchworth
• St Margaret's School, Bushey
• Watford Grammar School for Girls

Kent

• Benenden School
• Cobham Hall School
• Dartford Grammar School for Girls
• Kent College, Pembury
• Maidstone Grammar School for Girls
• Walthamstow Hall
• Wilmington Grammar School for Girls

Lancashire

• Lancaster Girls' Grammar School
• Penwortham Girls' High School
• Tauheedul Islam Girls' High School

Leicestershire

• Leicester High School for Girls
• Loughborough High School
• Loughborough Amherst School (formerly Our Lady's Convent School) - Coed ages 4-11 then girls only until 18

Lincolnshire

• Boston High School
• Kesteven and Grantham Girls' School
• Spalding High School
• Stamford High School

Merseyside

• Birkenhead High School Academy (Wirral)
• Greenbank High School
• Merchant Taylors' Girls' School

North Yorkshire

• Harrogate Ladies' College (coeducational for ages 2-11 with girls' only until age 18)
• The Mount School, York
• Queen Margaret's School, York
• Queen Mary's School
• Skipton Girls' High School

Northamptonshire

• Northampton High School, England
• Southfield School

Norfolk

• Norwich High School for Girls

Nottinghamshire

• Nottingham Girls' High School

Oxfordshire

• Cranford House School
• Headington School
• Oxford High School, England
• Rye St Antony School
• St Helen and St Katharine
• Tudor Hall School, Banbury

Shropshire

• Adcote School
• Moreton Hall School
• Shrewsbury High School, Shropshire (coed from ages 3-13 and girls only ages 13-18)

Somerset

• Bruton School for Girls
• Royal High School, Bath

South Yorkshire

• Sheffield High School, South Yorkshire

Surrey

• Manor House School, Little Bookham
• Notre Dame School, Surrey
• Prior's Field School
• Rosebery School
• Sir William Perkins's School
• St Catherine's School, Bramley
• St Teresa's School Effingham
• Tormead School
• Woldingham School

Tyne and Wear

• Newcastle High School for Girls
  • Newcastle upon Tyne Church High School (merged into Newcastle High School for Girls)
• Westfield School, Newcastle upon Tyne

Warwickshire

• The King's High School for Girls
• The Kingsley School (coed for preparatory school, girls only for senior school and sixth form)
• Stratford Girls' Grammar School

West Midlands

• Birmingham
  • Edgbaston High School
  • Handsworth Wood Girls' Academy
  • Hillcrest School, Birmingham
  • Hodge Hill Girls' School
  • King Edward VI Camp Hill School for Girls
  • King Edward VI High School for Girls
  • King Edward VI Northfield School for Girls
  • Kings Norton Girls' School
  • Selly Park Girls' School
  • St Paul's School for Girls
  • Swanshurst School

West Sussex

• Burgess Hill Girls
• Farlington School (has boys only at reception)

West Yorkshire

• Bradford Girls' Grammar School (coed ages 5-11, girls only ages 11-18)
• Gateways School (coed until age 11, girls only ages 11-18)
• Wakefield Girls' High School

Wiltshire

• Godolphin School
• St Mary's School, Calne
• St Mary's School, Shaftesbury

Worcestershire

• Malvern St James
• RGS Dodderhill
• St Mary's School, Worcester

• Amberfield School (girls only for ages 7-16)
• Bedgebury School

(Girls only ages 7-18) closed.

• Brigidine School, became Queensmead School Windsor, became coeducational, and closed
• Cambridgeshire High School for Girls which became the Long Road Sixth Form College
• Carlisle & County High School for Girls (now (Richard Rose Central Academy)
• Casterton School (became coeducational for a year and merged into Sedbergh School)
• Clarendon School for Girls (merged with Monkton Combe School)
• Commonweal Lodge (Closed)
• Derby High School, Derbyshire (previously girls' only for years 7-12 but will begin admitting boys for those years in 2019, making it fully coeducational)
• Donnison School, Sunderland Closed)
• Downham School
• Droylsden School, Mathematics and Computing College for Girls, merged with Littlemoss High School to form Droylsden Academy
• Heatherton House School (merged into Berkhamsted School)
• Heathfield School, Pinner
• Hethersett Old Hall School (closed in 2019)
• Ipswich High School (Suffolk) - Became coeducational in 2018
• Leeds Girls' High School, merged with Leeds Grammar School into the Grammar School at Leeds
• Leweston School, previously had a girls' only senior school, later became fully coeducational
• Manchester Central High School for Girls, which merged into Manchester Academy in 1967
• St Martha's Catholic School for Girls, became Mount House School, and as of 2018 is coeducational
• The Peterborough School (fully coeducational since 2010)
• Princess Helena College (became coeducational in 2019)
• The Royal School, Hampstead
• The Royal School, Haslemere (became a Diamond school in 2011)
• St Dominic's Grammar School (became coeducational by 2018)
• St Dominic's Priory School, Stone (now coeducational)
• St Joseph's Convent School, Reading, which became coeducational and is now St Joseph's College, Reading
• St Mary's School, Wantage
• Stonar School (became coeducational)
• Westholme School - Previously had a separate girls' junior school
• Winchester County High School for Girls - Now The Westgate School, Winchester (coeducational)
• Wykeham House School - had separate boys and girls schools - closed

Teesside High School used the Diamond model for a period but no longer does.

• Belfast Model School for Girls
• Hunterhouse College
• St Genevieves High School

• The Mary Erskine School, Edinburgh
• St George's School, Edinburgh
• St Margaret's School for Girls, Aberdeen

Former girls' schools

• Albyn School for Girls (became coeducational beginning in 2005)
• Glasgow Industrial School for Girls
• St Margaret's School, Edinburgh
• Kilgraston School, Perth (closed in 2024)
• Butterstone House School (merged with Kilgraston School in 2003)
• St Leonards School (became coeducational beginning in 1999)
• Hutchesons' Grammar School (had separate girls' school - became coeducational in 1976)
• Notre Dame High School, Glasgow (became coeducational in 2019)
• Park School for Girls, Glasgow (closed in 1996)

• Haberdashers' Monmouth School for Girls
• Howell's School, Llandaff

Former schools

• Aberdare Girls' School
• Cowbridge Girls School
• Howell's School, Denbigh. Now Middleton College International School
• St.Brigid's School, Denbigh. Now a co-educational state school
• Lowther College, Flint
• Kent College, North Wales

Guernsey

• Ladies' College, Guernsey

Jersey

• Beaulieu Convent School
• Jersey College for Girls

Bermuda

• Bermuda High School

Gibraltar

• Formerly for girls only: Westside School, Gibraltar (now coeducational)^[1]

• Girls' Schools Association
• Girls' Day School Trust
• List of boys' schools in the United Kingdom
• List of girls' schools in Hong Kong (Hong Kong was formerly a territory of the UK)