| Borough | Hillingdon |
| Postcode | HA6 3AS |
| Phase | Not applicable |
| School type | Other independent school |
| Gender | Girls |
| Age range | 3–18 |
| Sixth form | Has a sixth form |
| Admissions | Selective |
| Religious character | N/A |
| Overall rating | Not yet rated |
| Attainment 8 score | 77.1 |
| Grade 5+ English & Maths | 99.0% |
| Grade 4+ English & Maths | 100.0% |
| Headmistress | Bridget Ward |
| Phone | 01923843210 |
| Website | http://www.sthelens.london |
| Crime level | Low crime area |