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| St Marylebone Grammar School | |
|---|---|
 The original building, in August 2011 | |
| Location | |
 | |
City of Westminster, London United Kingdom | |
| Information | |
| Motto | ex animo tamquam Deo |
| Established | 1792 |
| Closed | 1981 |
St Marylebone Grammar School (SMGS) was a grammar school located in the London borough of the City of Westminster. It was open from 1792 to 1981.