| 101 | Ashley Manor Preparatory School | 280 pupils | Independent · Day | Cheltenham, South West | — ISI · Good |
| 102 | Upton House School | 278 pupils | Independent · Day | Berkshire, South East | — ISI · Good |
| 103 | King Edward VI Preparatory School | 276 pupils | Independent · Day | Romsey, South East | — ISI · Good |
| 104 | Truro School Preparatory School | 276 pupils | Independent · Day | Truro, South West | — ISI · Good |
| 105 | Broughton Manor Preparatory School | 272 pupils | Independent · Day | Milton Keynes, South East | — ISI · Good |
| 106 | Alleyn's Oakfield | 271 pupils | Independent · Day | Unknown, London | — ISI · Good |
| 107 | Duncombe School | 271 pupils | Independent · Day | Hertford, East of England | — ISI · Good |
| 108 | The Ryleys School | 271 pupils | Independent · Day | Alderley Edge, North West | — ISI · Good |
| 109 | Bancroft's Preparatory School | 270 pupils | Independent · Day | Woodford Green, London | — ISI · Good |
| 110 | Newcastle Preparatory School | 267 pupils | Independent · Day | Newcastle-upon-Tyne, North East | — ISI · Good |
| 111 | Radlett Preparatory School Ltd | 266 pupils | Independent · Day | Herts, East of England | — ISI · Good |
| 112 | The Roche School | 264 pupils | Independent · Day | London, London | — ISI · Good |
| 113 | Waverley Preparatory School & Day Nursery | 264 pupils | Independent · Day | Berkshire, South East | — ISI · Good |
| 114 | Gateway School | 261 pupils | Independent · Day | Great Missenden, South East | — ISI · Good |
| 115 | Prospect House School | 261 pupils | Independent · Day | London, London | — ISI · Good |
| 116 | Bournemouth Collegiate Preparatory School | 260 pupils | Independent · Day | Poole, South West | — ISI · Good |
| 117 | Berkhampstead School | 258 pupils | Independent · Day | Cheltenham, South West | — ISI · Good |
| 118 | Yarrells Preparatory School | 258 pupils | Independent · Day | Poole, South West | — ISI · Good |
| 119 | Laxton Junior School | 256 pupils | Independent · Day | Unknown, East Midlands | — ISI · Good |
| 120 | Oaklands School | 256 pupils | Independent · Day | Loughton, East of England | — ISI · Good |
| 121 | Cricklade Manor Prep | 251 pupils | Independent · Day | Swindon, South West | — ISI · Good |
| 122 | Moor Allerton Preparatory School | 251 pupils | Independent · Day | Manchester, North West | — ISI · Good |
| 123 | Banstead Preparatory School | 249 pupils | Independent · Day | Banstead, South East | — ISI · Good |
| 124 | Micklefield School | 249 pupils | Independent · Day | Reigate, South East | — ISI · Good |
| 125 | Staines Preparatory School | 248 pupils | Independent · Day | Unknown, South East | — ISI · Good |