Before
urbanisation the entire road was known as the "Harrow Road" but, as various local authorities came into existence and imposed independent numbering schemes and more localised descriptions on the parts of the road within their respective boundaries, the principal name was replaced in a number of places along its course. The current street names (with
road numbers) running from Paddington to Harrow are as follows: Starting at the junction of Harrow Road and
Edgware Road at
Paddington Green in the
City of Westminster: • Harrow Road (Paddington), passing through
Maida Hill, Queens Park and Kensal Green. This stretch runs partially alongside and underneath the
Westway urban motorway. At the junction of
Ladbroke Grove the road leaves the City of Westminster and forms the boundary between the
London Borough of Brent and the
Royal Borough of Kensington and Chelsea (except for the length between
Kensal Green station and the entrance to
Kensal Green Cemetery where it is entirely within Brent) until reaching Scrubs Lane where it becomes entirely within the borough of Brent. • High Street (
Harlesden), also known as the
A404 road • Craven Park, A404 • Hillside, A404 • Brentfield, A404 Passing over the
River Brent which formed the pre-1965 boundary between the former
Municipal Borough of Willesden and the
Metropolitan Borough of Wembley (both now defunct) and from which the modern borough takes its name: • Harrow Road (
Wembley), A404 Which passes through
Tokyngton • High Road (Wembley), A404 • Harrow Road (
Sudbury), A404, changing to
A4005 at the junction with Watford Road (which continues the A404) Passing from the
London Borough of Brent into the London Borough of Harrow at the Sudbury Court Drive junction: • Sudbury Hill, A4005 • London Road (Harrow), A4005, changing to B457 at junction with Roxeth Hill • High Street (Harrow), B457 ==History==