Northolt is a town in West London, England, spread across both sides of the A40 trunk road. It is 11 mi (17.7 km) west-northwest of Charing Cross and is one of the seven major towns that make up the London Borough of Ealing. It had a population of 30,304 at the 2011 UK census.

The London Borough of Ealing is a London borough in London, England. It comprises the districts of Acton, Ealing, Greenford, Hanwell, Northolt, Perivale and Southall. With a population of 367,100 inhabitants, it is the third most populous London borough.