-NHS staff
-social/care workers
-nursery/teaching staff
-food distribution
-police/fire/prisons/border officers
-banks/building societies
gov.uk/government/pub…
-haulage/shipping
-oil/gas/utilities
-IT infrastructure
-sewerage
-justice system
-journalists/broadcasters
-undertakers
-charities
-some local govt
-PPE manufacture
Turns out quite a lot of workers are key- potentially quite a lot of kids still at school