Burnt Oak is a suburb predominantly in the London Borough of Barnet south of Edgware.
The name Burnt Oak was first used in 1754 and from then until the 1850s referred to no more than a field on the eastern side of the Edgware Road (Watling Street). Nor is there evidence that the name implies anything except that the field had once contained a burnt oak tree. In May 1844 Burnt Oak field was sold to a Mr Essex, and by the 1860s plans were in place to build three residential streets: North Street, East Street, and South Street. The application of the field name to the area seems to have followed from this new estate and was in use by the end of the 19th century. However, the area was generally known as Red Hill until the opening of Burnt Oak Station.
More information on the Wikipedia page