Her Majesty The Queen dropped in on Krishna Avanti School, in Edgware, on March 29, 2012.
Here, we take a look back at our best shots of the day as she celebrates her 90th birthday.
To see our round up of the day, click here.
Have any more photos? Let us know by e-mail aslater@london.newsquest.co.uk and we'll add them in.
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