Jim59: There is an automatic extension for MOTs until November so clearly you are not expected to drive to an MOT. Garages need to stay open to keep the cars of essential workers going (section 6 2 f allows you to travel to provide those services, services including your work) - most of my nurses now drive to work and my local authority allows them to part for free....but otherwise I think you are in the same position as with your aircraft
Fostex: 6 2 h does indeed include legal requirements, but then states 'attending court or satisfying bail conditions, or to participate in legal proceedings'. Whilst not proscribing other obligations, it is a leap of faith from jury service to keeping the donkey working. It is not illegal to be out of maintenance if you dont fly.
As I posted earlier, an interesting dilemma.