 Outward from London the road starts as Chiswick Lane at Chiswick, between 75 and 79 Chiswick High Road .Near the geographical centre of Chiswick it crosses the A4 at the Hogarth Roundabout, the connection for central London, the west of England, and South Wales.The road goes on past the grounds of Chiswick House as Burlington Lane, and then becomes Great Chertsey Road, passing Chiswick School.