The UK’s Heathrow Express has introduced a newly renovated fleet of a dozen Class 387 trains, marking the first new fleet since the launch of the service in 1998. The fleet has been upgraded from GWR, in line with Heathrow Express’ sustainability values, and fitted out with improved interiors after passing through high and exacting standards. Instead of brake shoes and discs, the trains have regenerative braking, which reduces wear and tear, as well as train and rail damage. Regenerative braking also produces electricity, which is fed back into the overhead power grid. The new trains are equipped with the latest train technology such as the new European Train Control System (ETCS) signalling system. This system constantly computes a safe maximum speed for each train and takes control if the permissible speed is surpassed. The new fleet features more space for wheelchair users, luggage storage, fast onboard 4G-enabled Wi-Fi, and USB plugs with every plug socket. It has extra toilets and a continuous gangway throughout the train. The trains replaced the old Class 332s and commenced services from 29 December 2020.