Heathrow Connect ordered five Class 360/2s four-car units for the stopping service between London Paddington and Heathrow Airport. They were converted from a speculative Class 350 order made by Angel Trains. They were later increased to five cars. In May 2018, all of the Class 360/2s were transferred to TfL Rail which were replaced by Class 345 trains from July 2020. In February 2021, it was announced that Rail Operations Group had inherited the Class 360s from Heathrow Airport Holdings. They are currently in storage pending further use with the company.