Officers patrolling St Peter’s Street in Derby last night seized an illegally modified e-bike capable of travelling over twice the legal speed limit for such vehicles.
The bike, which had been altered to reach speeds exceeding 31mph (50kph), is now classified as a motorcycle under UK law due to its high performance. The legal speed limit for e-bikes in the UK is capped at 15mph, meaning the seized vehicle was travelling at more than double the permitted speed.
In a video shared by Derby City Safer Neighbourhood Team, officers demonstrated the bike’s excessive speed, warning against the use of illegally modified e-bikes.
A serious safety risk
In a statement accompanying the footage, officers highlighted the dangers of such modifications.
“This particular machine has been illegally modified to go far past the speed it should do,” they explained.
“We will take action against these machines whenever we can.”
Illegal modifications not only put the rider at risk but also endanger pedestrians and other road users, particularly in crowded city areas like St Peter’s Street.
Vehicles classified as motorcycles require registration, insurance, and a license to operate legally on public roads—none of which the seized e-bike had.
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Crackdown on illegal vehicles and e-bikes
The seizure is part of an ongoing effort by Derbyshire Police to tackle unsafe and illegal vehicles across the city. Officers have increasingly focused on modified e-bikes, scooters, and other motorized vehicles that fail to comply with UK road regulations.
The growing popularity of e-bikes has brought convenience to many riders, but illegal alterations undermine their intended purpose as safe, eco-friendly alternatives to traditional transportation. Police emphasize that any e-bike exceeding 15mph with motor assistance is reclassified as a motor vehicle, subject to stricter rules.
Public urged to comply with laws on e-bikes
Police are urging e-bike owners to familiarize themselves with legal requirements and avoid any unauthorized modifications.
Misusing such vehicles not only risks seizure but could also result in fines, penalties, or prosecution.
“These machines are becoming more common, and while we understand their appeal, they must be used responsibly and within the law,” officers said.
The seized e-bike will be held as evidence and is likely to be destroyed if the case results in prosecution.
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Protecting public safety
The incident highlights the ongoing challenges authorities face in keeping streets safe amid the rise of electric vehicles. While e-bikes offer a sustainable transportation option, illegal modifications compromise their safety, contributing to accidents and other road hazards.
Derbyshire Police remain committed to enforcing regulations and have asked residents to report any illegal or unsafe vehicles in their communities. With increased patrols and public awareness campaigns, they aim to minimize risks posed by non-compliant vehicles.
As the holiday season approaches, officers are also cautioning parents against purchasing high-powered e-bikes or scooters for children without understanding the legal implications.
By seizing this illegally modified e-bike, police are sending a clear message: unsafe vehicles will not be tolerated on Derby’s streets.
Police statement on seized illegal motorcycle
Last night whilst on patrol, officers were able to seize this e-bike going on ST Peter’s Street. This particular machine has been illegally modified to go far past the speed it should do, which is 15mph.
As you can see in this video, the speed of this machine can go in excess of 50kph, which is 31.1mph.
Double the speed the bike should be able to travel, therefore classifying this as a motorcycle. We will take action against these machines whenever we can.
Understanding modified bike laws in the UK
In the UK, e-bikes—referred to as electrically assisted pedal cycles (EAPCs)—must adhere to strict regulations to remain classified as bicycles. These rules ensure their safe use on public roads and cycle paths without requiring registration or licensing.
To qualify as an EAPC, an e-bike must meet the following criteria:
The motor must not exceed a power output of 250 watts.
The motor’s assistance must be cut off when the bike reaches 15.5mph (25kph).
Riders must be at least 14 years old.
If an e-bike is modified to exceed these limits, it is reclassified as a motor vehicle, such as a moped or motorcycle. This means it must meet additional legal requirements, including:
Registration with the DVLA.
Valid insurance coverage.
Use of a helmet and compliance with motorcycle road laws.
Failing to comply with these regulations can result in fines, vehicle seizure, and even prosecution. Riders and sellers are urged to ensure all modifications align with legal standards to avoid penalties and protect public safety.
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