20mph urban speed limits proposed by parliamentary advisors

Calls for blanket 20mph speed limits on urban roads have been reignited, after a leading road safety body told MPs that a nationwide approach would be cheaper and easier to implement than the current mismatch from one region to the next.

The Parliamentary Advisory Council for Transport Safety (PACTS), which advises the Government on road safety matters, told the Commons transport select committee that reducing the default speed limit in built-up areas could cut costs by reducing the need for individual consultations, paperwork and additional signage.

Speaking to MPs, PACTS executive director Jamie Hassall argued that a national approach would make more sense than asking individual councils to introduce limits on a case-by-case basis.

He also argued that giving councils the ability to change urban speed limits at will would save money and cut the administrative burden. Oddly, Hassall isn’t against individual councils increasing the limit from 20mph, which does beg the question of what’s the point in reducing it in the first place. 

“Having guidance that allows people to change the current limit is more expensive, and it’s going to take a lot more time … A national approach that covers the majority and allows local decisions to increase [limits] would be a more sensible way forward.” He said

The discussion comes as 20mph limits continue to spread across the UK. Wales, in 2023, famously introduced a blanket 20mph limit on restricted roads. That policy didn’t really go down very well with residents and visitors, and the policy has since been revised.

North of the border, the Scottish Government has committed to introducing 20mph limits on roads "where it is appropriate to do so", while dozens of councils in England have adopted similar policies.

London remains one of the most prominent examples. Reducing urban speed limits has become a key transport policy for the London Mayor Sir Sadiq Khan, with more than half of the capital's roads now carrying a 20mph restriction - and most of them covered with lots of speed cameras.

Supporters of the idea point to early safety data from councils that have embraced the lower limits. Oxfordshire County Council, which has helped to introduce 20mph roads across 275 towns and villages, says provisional figures suggest the number of people killed or seriously injured on its roads was around 18 per cent lower in 2025 than the previous year.

Not everyone is convinced, though, with the Conservatives pledging to oppose blanket 20mph schemes. They argue that they create unnecessary restrictions for motorists, while some councils have faced criticism after increasing council tax to help fund local rollouts.

So, is twenty plenty? Or is this just another case of national government unnecessarily meddling in local affairs?

Lead image: Brake 

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