TransPennine Express and Avanti West Coast are concerned the vehicles' lithium-ion batteries can emit toxic smoke.
(Permalink) Avanti West Coast TransPennine Express e-scooters

Avanti West Coast to ban e-scooters at stations and onboard trains from 27 December 2022.
(Permalink) Avanti West Coast e-scooters

Northern is introducing a ban on all e-scooters, hoverboards and e-skateboards across its trains and stations in the North of England.
(Permalink) Northern e-scooters

E-scooters are to be banned from the Tyne and Wear Metro and Shields Ferry from Monday, 13 December, operator Nexus announced today. The ban is being introduced following incidents in the London area, which has led Transport for London to review e-scooter use and introduce a similar restriction. There have been a number of incidents of privately-owned e-scooters and e-unicycles catching fire on public transport services and stations in London. A review by Transport for London found that the incidents that occurred were caused by defective lithium-ion batteries which ruptured without warning. This led to fires that caused toxic smoke to be released, which could be a significant risk in enclosed areas. Privately owned e-scooters remain illegal to use in public spaces but are widely available for purchase.
(Permalink) E-scooters Shields Ferry Tyne and Wear Metro