| Type | Other independent school |
| Phase | All through |
| Gender | Mixed |
| Age Range | 7 - 18 |
| Headteacher | Mrs Jenny Brown |
| Address |
St Giles' Terrace Barbican London EC2Y 8BB |
| Religious Character | None |
| Website | http://www.clsg.org.uk |
| Telephone | 2078475500 |
| Number of pupils | 809 |
| Inspection | |
| GCSE national ranking | Top 10% |
| A-Level national ranking | Top 1% |
| Local authority | City of London |
| Region | London |
| URN | 100001 |
| View this school information in GOV.UK website | |