Healthcare access differs across England, Scotland, Wales, and Northern Ireland...

https://blogfreely.net/gertonmhvf/can-you-access-specialist-care-that-is-not-tied-to-your-local-health-board

Healthcare access differs across England, Scotland, Wales, and Northern Ireland since devolution has allowed each nation to manage services differently. This means the care you receive can depend on where you live — often called a postcode lottery