I have tried recruiting Muslim governors, amongst others, aka.
Had a bright young graduate once, for a year, but her job was busy and then she married (a Welsh man - but it was OK cos he converted )
Otherwise the dads usually worked evenings in restaurants and taxis and the mums were at home looking after kids.
I'm sure there are lots of schools in affluent areas where they struggle to find governors who can and do actually stay on top of the ever increasing list of things they are accountable for. Preventing radicalisation is one of the most recent. The list includes all the things a normal employer does (in a variously unionised environment) , safeguarding of children, educational performance, performance and pay of staff, recruitment etc etc
Also there is no mechanism for "drafting in" aka. Academies are responsible for recruiting their own governors. Sometimes they advertise in the paper for community governors, but there is not a queue forming to take on such an onerous task. Same with small charities looking for trustees.