All roads in the borough of Westminster in London now have spped limits of 20mph, as part of plans to tackle road safety and air quality.

Westminster Council – whih covers a large area of central London, confirmed this week it had finished rolling out the speed changes throughout the borough.

Now Transport for London (TfL) plans to do the same with its roads in the north of the borough, including Wellington Road, Park Road, Finchley Road and the A5205, although it said the Westway A40 will remain 30mph. Currently, TfL has given the 20 mph speed limit to all highways it manages within the current Congestion Charge Zone.

The City of London Corporation reduced all roads in the Square Mile to 20mph earlier this year, and is planning to reduce them to a 15mph limit in the future. Islington council has had 20 mph speed limits since 2011, and Camden council since 2013.

Councillor Andrew Smith, Westminster’s cabinet member for highways and the environment, said: “Our teams have been working throughout the summer to carefully and effectively complete this roll-out across Westminster.

“Reducing our city-wide speed limit is a clear step forward in our efforts to create a hub of safe and sustainable transport, not only saving lives but creating a calmer and more inviting street environment for those who travel around our city, whether by foot, cycle, car, taxi or bus.”