Arriva has purchased 51 new electric double-decker buses from Volvo Buses. The battery-electric buses, which are based on the BZL Electric chassis, will be delivered in 2025 and used on the 243 and 341 routes operated by Transport for London in the British capital.
There are double decker EV buses operating in Singapore for around 4 years.
https://www.straitstimes.com/singapore/first-10-double-decker-electric-buses-begin-plying-singapore-roads
And old people said that evs are only for tiny cars buhahaha.