Barnet House is an twelve-storey office block at 1255 High Road, on the corner of Baxendale, at Whetstone, London, N20.

Whetstone is a suburb of London, in the London Borough of Barnet, bearing the postcode N20. It is served by an Underground station called Totteridge and Whetstone. Whetstone is around 7.8 miles North of Charing Cross and is a settlement in the London Borough of Barnet, previously part of the Borough of Finchley prior to the 1960s. The combined areas of Totteridge and Whetstone was, at the outset of the 21st century, found to be the 63rd-richest of the more than 9,000 wards of the United Kingdom.