Thanks for the suggestions, it’s about 1/3 of the garden I suppose so not that big really.
There’s some decent sized bits that I can get up, it’s also fairly damp as it’s mostly in shade, it’s the 2p sized bits and smaller that are literally scattered far and wide, plus all the tiny bits I can’t see that are the issue.
I reckon pick up all the small bits I can see, rotovate, pick up any bits I can see, lay turf. All while wearing a funny white suit and wearing a mask.
Shropshire Council just say that a small amount (i.e. a garage room), double bagged and clearly marked as asbestos can be taken to the recycling place as long as you phone in advance.