Yes, the UK will mandate speed limiters in all new cars starting from July 7, 2024. These limiters, known as Intelligent Speed Assist (ISA) systems, use GPS and traffic-sign-recognition cameras to determine and enforce the maximum speed allowed in a given area. Although the UK is no longer part of the EU, it has decided to implement this regulation in line with European Commission standards to improve road safety and reduce traffic accidents.
The speed limiter will restrict the engine's power to prevent exceeding speed limits. Drivers can temporarily override the system by pressing hard on the accelerator, but it will reset every time the car is started. Concerns have been raised about the reliability of the technology, as it may sometimes misinterpret speed limits due to obscured signs or GPS inaccuracies. Nonetheless, the system is designed to assist rather than completely take over driver responsibility for adhering to speed limits.

https://www.autotrader.co.uk/c....ontent/news/mandator

https://www.parkers.co.uk/car-....advice/speed-limiter