NW3 is located in the county of
Barnet, Greater London · England
Greater London is a ceremonial county in England. As a ceremonial county, it is headed by a Lord Lieutenant who serves as the Sovereign's representative.
When asked for your county on official forms (passport applications, DVLA, HMRC), enter Greater London. This is the ceremonial/geographic county for postcode NW3.
Your council tax is collected by Barnet, which is the local authority within Greater London. Contact your local council for billing enquiries.
Royal Mail considers the county optional in postal addresses — the postcode is sufficient for delivery. However, many forms and databases still require a county. For NW3, use Greater London.
Postcode NW3 is in Barnet, which is the local authority (council) that provides your day-to-day services such as waste collection, planning permission, and housing. Barnet sits within the ceremonial county of Greater London, which is the geographic county used on official forms, passport applications, and formal addresses.
In short: Barnet is your council; Greater London is your county. When forms ask for "county", enter Greater London.
NW3 is in Greater London, England.
NW3 is in Barnet.
For postcode NW3, enter Greater London as your county on official forms, passport applications, and formal addresses.
Postcode NW3 is served by Barnet, a local authority within Greater London. Contact them for council tax, planning, and local services.
Yes. Royal Mail states that the postcode is the essential element for delivery — county is not required. However, including Greater London can help if the postcode is unclear or on forms that require it.
Greater London is a ceremonial county, one of 46 ceremonial counties in England headed by a Lord Lieutenant.