“Given the circumstances I’m granting an MOT temporary exemption so that if your MOT is due from 30th March 2020 you wil automatically receive a SIX-month extension.However, you must still keep your car in a roadworthy condition and garages will remain open if you need repairs.” Grant Shapps UK Secretary of State for Transport 

Information here, click on link: Coronavirus (COVID-19): MOTs for cars, vans and motorcycles due from 30 March 2020