20mph is as enforceable as any speed limit.  20’s Plenty for Us asked Police Forces whether and how they actually enforce 20mph speed limits.  The answers is that many do enforce 20mph and more are doing so.  Note that 2/3 of speeding tickets come from Fixed Cameras (across ALL speed limits) 

20’s Plenty for Us is often asked whether 20mph is enforceable.  The answer is clear: “20mph is as enforceable as any other speed limit”.  In light of the increasing number of places implementing lower speed limits, 20’s Plenty for Us asked all Police Forces in Great Britain whether they are actually enforcing 20mph speed limits.  It turns out that many are enforcing 20mph and doing so more often than in previous years.  We note that more than 2/3 of speeding tickets in ALL speed limits come from Fixed Cameras.

41 out of 44 police forces in Great Britain[1] responded to three questions:

• How many Notices of Intended Prosecution (NIPS) for speeding offences had they issued in 2025;
• How many of those were issued in each speed limit; and
• How many were from fixed cameras?

You can download the data for your particular police force here.

Four key findings

• Notice of Intended Prosecutions: The 41 responding police forces issued 4.2m NIPs in 2025[2], an overall increase of 3% from 2024 and 20% more than 2023.
• Fixed cameras. Over two thirds of all NIPs were generated from fixed cameras, which means that enforcement on 20mph roads is likely to increase as more 30mph roads with fixed cameras become 20mph, such as in London, where half of NIPs are issued on 20mph roads.
• 20mph roads. In 2025, 28 Police Force (5 more than in 2024) issued 600,000 NIPs on 20mph roads (14% of the total). The Metropolitan Police Service issued nearly 400,000 NIPs, Police in Wales issued over 100,000 and Avon & Somerset, Devon & Cornwall and West Yorkshire all issued over 20,000. 
• Enforcement variability.  Large variations in how each Police Force enforces all speeds limits; variations do not appear to relate to the size of the population in a force's area, the number of vehicles on the roads, the length of roads or the number of casualties. 

[1] Staffordshire declined to answer and Gloucestershire and Thames Valley were unable to answer.

[2] The figures quoted include NIPs which are subsequently cancelled.

1) Top Ten NIPs issuers