| Borough | Harrow |
| Postcode | HA2 0HN |
| Phase | Not applicable |
| School type | Other independent school |
| Gender | Mixed |
| Age range | 2–18 |
| Sixth form | Has a sixth form |
| Admissions | Not applicable |
| Religious character | N/A |
| Overall rating | Not yet rated |
| Attainment 8 score | 11.6 |
| Grade 5+ English & Maths | 0.0% |
| Grade 4+ English & Maths | 0.0% |
| Head | R Hardy |
| Phone | 02085159400 |
| Website | www.johnlyon.org |
| Crime level | Low crime area |