13+ Feeder Schools
The following schools sent boys to Westminster in 2019:
| Feeder School | Numbers |
| Arnold House School | 2 |
| British School of Brussels | 1 |
| Devonshire House Preparatory School | 1 |
| Dragon School | 1 |
| Dulwich Prep London | 4 |
| Durston House | 1 |
| Eaton House The Manor | 5 |
| Fulham School | 1 |
| Haberdashers’ Aske’s School | 1 |
| Hall School | 12 |
| Heathside School | 1 |
| Hereward House School | 6 |
| King’s College Junior School (Wimbledon) | 2 |
| King’s House | 1 |
| Lyndhurst House Prep School | 1 |
| Milbourne Lodge School | 3 |
| Newton Prep | 2 |
| North Bridge House | 3 |
| Notting Hill Preparatory School | 1 |
| Orley Farm School | 2 |
| Reading Grammar School | 1 |
| St Anthony’s | 1 |
| St Philip’s | 1 |
| Summer Fields | 1 |
| Sussex House | 7 |
| Tasis The American School in England | 1 |
| The Mall School | 1 |
| Thomas’s Clapham | 1 |
| Trevor-Roberts’ | 2 |
| Westminster Cathedral Choir School | 3 |
| Westminster Under School | 49 |
| Wetherby Prep School | 2 |