https://www.theregister.co.uk/2020/01/13/y2k_dvla/

A mysterious "blip" has caused the printers of the UK Driver and Vehicle Licensing Agency (DVLA) to skip back a century as 2020 rolled round, unless the acknowledgement of a change of keeper took a really long time to arrive.

A Register reader, having sold a vehicle, filled out the requisite paperwork and sent it off to the agency, which is responsible for maintaining a database of drivers and vehicles in Blighty. An acknowledgement was received, which helpfully noted that it been printed in 1920.