anyone intentionally migrating infrastructure to the cloud in 2024 hasnt seen the bill, or is spending the taxpayers pound.
"Gov.uk notify" isnt a critical business service. it doesnt need multi-az or multi region failover. running a docker container itself isnt a feat of achievement.
you could save money over the longterm by running a pair of pizzaboxes in Cardiff and Edenborough running orchestrator. hell, you could arguably run notify in a pensioners basement off a pi powered by a solar panel.