Avon
- Badminton School
- Tockington Manor School
Bedfordshire
- Bedford Prep School
- Bedford School
Berkshire
- Bradfield College
- Brockhurst and Marlston House
- Downe House
- Elstree School
- Eton College
- Heathfield School
- Horris Hill School
- Leighton Park School
- Licensed Victuallers School
- Luckley House School
- Ludgrove School
- The Oratory Prep School
- The Oratory School
- Padworth College
- Pangbourne College
- Papplewick School
- Queen Anne's School
- Reddam House School
- St Georges School Ascot
- St John's Beaumont
- St Mary's School Ascot
- Sunningdale School
- Wellington College
Buckinghamshire
- Godstowe Preparatory School
- International School of Creative Arts
- Royal Grammar School
- St Edward's School
- Stowe School
- Thornton College
- Wycombe Abbey School
Cambridgeshire
- Abbey College Cambridge (DLD)
- Cambridge Arts and Sciences
- Cambridge Centre for Sixth Form Studies
- Cambridge International School
- Cambridge Regional College
- CATS College Cambridge
- Kimbolton School
- King's School Ely
- The Leys School
- Mander Portman Woodard - Cambridge (MPW)
- St Mary's School, Cambridge
Cheshire
- Terra Nova School
Cornwall
- Truro High School for Girls
- Truro School
Cumbria
- Dallam School
- Keswick School
- Sedbergh School
- Windermere School
Derbyshire
- Abbotsholme School
- Mount St Mary's College
- Repton Preparatory School
- Repton School
Devon
- Blundell's School
- Kingsley School
- Mount Kelly School
- Plymouth College
- Shebbear College
- St John's International School
- Stover School
- Trinity School
- West Buckland School
Dorset
- Bryanston Knighton House School
- Canford School
- Clayesmore School
- Kings' Bournemouth
- Leweston School
- Milton Abbey School
- Port Regis School
- Shaftesbury School
- Sherborne School
- Sherborne School for Girls
- St Mary's Shaftesbury
- Talbot Heath
Durham
- Barnard Castle School
- Durham School Polam Hall
East Sussex
- Ashdown House
- Battle Abbey School
- Bede's
- Bede's Prep School
- Bellerbys College
- Brighton College
- Claremont School
- Eastbourne College
- Frewen College
- Mayfield School
- Roedean School
- Seaford College
- St Andrews Prep School
- Vinehall School
Essex
- Brentwood School
- Chigwell School
- Felsted School
- New Hall School
Gloucestershire
- Bredon School
- Cheltenham College
- Cheltenham Ladies College
- Dean Close School
- Hatherop Castle School
- Rendcomb College
- Westonbirt School
- Wycliffe College
- Wycliffe Preparatory School
Hampshire
- Bedales School
- Boundary Oak School
- Bournemouth Collegiate School
- Brockwood Park School
- Embley
- Forres Sandle Manor School
- Grateley House School
- Highfield & Brookham Schools
- Lord Wandsworth College
- Moyles Court School
- Rookwood School
- Sherfield School
- St John's College
- St Swithun's School
- The Pilgrims' School
- Walhampton School
- West Hill Park School
- Winchester College
Herefordshire
- Hereford Cathedral School
- Lucton School
Hertfordshire
- Aldenham School
- Berkhamsted Collegiate
- Bishops Stortford College
- Edge Grove School
- Haileybury School
- Hockerill Anglo European College
- Lockers Park School
- Princess Helena College
- Purcell School
- Queenswood School
- The Royal Masonic School for Girls
- St Christopher School
- St Edmund's College
- St Francis' College
- St George's School
- St Margaret's School Bushey
- Stanborough School
- Tring Park Performing Arts School
Kent
- Ashford School
- Beechwood Sacred Heart
- Benenden School
- Bethany School
- CATS Canterbury
- Cobham Hall School
- Cranbrook School
- Dover College
- The Duke of York's Royal Military School
- Earlscliffe College
- Farringtons School
- Junior King's School Canterbury
- Kent College; Canterbury
- Kent College; Pembury
- King's School Canterbury
- King's School Canterbury International
- King's School Rochester
- Northbourne Park
- Rochester Independent College
- Sevenoaks School
- Sir Roger Manwood's School
- St Edmund's School
- St Lawrence College
- Sutton Valence School
- Tonbridge School
- Wellesley House Prep School
Lancashire
- Kirkham Grammar School
- Moorland School
- Rossall School
- Stonyhurst College
Leicestershire
- Ashby School
- Brooke House College
- Loughborough Grammar Ratcliffe College
Lincolnshire
- De Aston School
- Lincoln Minster School
- Priory Academy LSST
- St James' School
- Stamford High School for Boys
- Stamford High School for Girls
London
- CATS London
- DLD College London
- Dulwich College
- Mill Hill International
- Mill Hill School
- MPW College London
Manchester
- Abbey College Manchester (DLD)
Middlesex
- Harrow School
Norfolk
- Aurora Eccles School
- Beeston Hall School
- Greshams School
- Hethersett Old Hall School
- Langley School
- Riddlesworth Hall
- Taverham Hall
- Wymondham College
Northamptonshire
- Bosworth Independent College
- Maidwell Hall
- Oundle School
Northumberland
- Longridge Towers School
- The Chorister School
Nottinghamshire
- Trent College
- Worksop College
Oxfordshire
- Trent College
- Worksop College
- Oxfordshire
- Abingdon School
- Bloxham School
- Burford School
- Cherwell College
- Cothill House School
- d'overbroecks College
- d'overbroecks ISC
- Dragon School
- Headington School
- Kingham Hill School
- Oxford International College
- Oxford International Study Centre
- Oxford Sixth Form College
- Radley College
- Rye St Antony
- Shiplake College
- Sibford School
- St Clare's Oxford
- Summer Fields School
- Tudor Hall School Wychwood School
Rutland
- Oakham School
- Uppingham School
Scotland
- Ardvreck School
- Belhaven Prep School
- Dollar Academy
- Fettes College
- Glenalmond College
- Gordonstoun School
- Kilgraston School
- Lomond School
- Loretto School
- The Mary Erskine School
- Merchiston Castle School
- St Georges School for Girls
- St Leonards School Fife
- Stewart's Melville College
- Strathallan School
Shropshire
- Adams' Grammar School
- Adcote School
- Bedstone College
- Concord College
- Ellesmere College
- Moor Park School
- Moreton Hall School
- Oswestry School
- Packwood Haugh School
- Shrewsbury School
- The Thomas Adams School Wrekin College
Somerset
- All Hallows Prep School
- Bruton School for Girls
- Downside School
- Hazlegrove Preparatory School
- King's Bruton
- King's College Taunton
- King's Hall School
- Kingswood School
- Millfield School
- Monkton Combe School
- North Hill House School
- Perrott Hill School
- Prior Park College
- Queen's College
- Royal High School
- Sexey's School
- Shapwick School
- Sidcot School
- Taunton School
- Taunton School International
- Wellington School
- Wells Cathedral School
Staffordshire
- Chase Grammar
- Denstone College
Suffolk
- Barnardiston Hall Prep School
- Brookes, Cambridge
- Culford School
- Finborough School
- Framlingham College
- Ipswich High School
- Ipswich School
- Old Buckenham Hall School
- Orwell Park Prep School
- St Felix School
- St Joseph's College
- Stoke College
- The Royal Hospital School
- Woodbridge School
Surrey
- ACS Cobham
- Aldro School
- Box Hill School
- Cambridge Tutors Group
- Caterham School
- Charterhouse
- City of London Freemens School
- Cranleigh School
- Epsom College
- Frensham Heights
- Gordon's School
- Hurtwood House
- King Edward's Witley
- Marymount International
- More House School
- Priors Field School
- Reed's School
- Royal Russell School
- St Catherines School
- St John's Leatherhead
- St Teresa's School
- TASIS
- The Royal Alexandra and Albert School
- The Royal School Haslemere
- The Yehudi Menuhin School
- Whitgift School
- Woldingham School
- Woodcote House School
Wales
- Cardiff Sixth Form College
- Christ College Brecon
- Llandovery College
- Monmouth School for Boys
- Monmouth School for Girls
- Myddelton College
- Pembrokeshire College
- Ruthin College
- Rydal Penrhos
- St David's College
- St John's on-the-Hill
- St Michael's School, Llanelli
- UWC Atlantic College
- Westbourne School
Warwickshire
- Bilton Grange Preparatory School
- Royal Leamington Spa College
- Rugby School
- Stratford-upon-Avon College
- Warwick School
West Midlands
- Elmhurst Ballet School
- MPW College Birmingham
- Old Swinford Hospital
- Tettenhall College
- The Blue Coat Prep School
- The Royal School Wolverhampton
West Sussex
- Ardingly College
- Brambletye School
- Burgess Hill Girls
- Chichester College
- Christ's Hospital School
- Copthorne Preparatory School
- Cottesmore School
- Farlington School
- Great Ballard School
- Handcross Park Prep School
- Lancing College
- Slindon College
- Steyning Grammar School
- The Prebendal School
- Westbourne House School
- Windlesham House School
- Worth School
- Worthing College
Wiltshire
- Bishopstrow College ISC
- Chafyn Grove
- Cricklade Manor Prep
- Dauntseys School
- Godolphin School
- Marlborough College
- Sandroyd School
- St Mary's School Calne
- Stonar School
- Warminster School
- Wellington Academy
Worcestershire
- Abberley Hall Prep School
- Abbey College, Malvern
- Bromsgrove Prep School
- Bromsgrove School
- King's College Saint Michael's
- Malvern College
- Malvern St James
- The Downs, Malvern
- The Elms School
Yorkshire
- Ackworth School
- Ampleforth College
- Ashville College
- Aysgarth School
- Bootham School
- Fulneck School
- Fyling Hall School
- Giggleswick Junior School
- Giggleswick School
- Harrogate Ladies College
- Pocklington School
- Queen Ethelburga's College
- Queen Margaret's School
- Rishworth School
- Scarborough College
- St Olave's School
- St Peter's School
- The Mount School
- The Read School
- Woodhouse Grove
