NHS challenges in Scotland, Wales and NI explained
3 April 2013 Last updated at 10:29 BST
The NHS in England is being re-organised as GP-led groups take control of budgets while a new board supervises the day-to-day running of services.
However, in the rest of the UK each nation is responsible for running its own health service and faces its own set of challenges.
The BBC's health correspondents assess the issues in Northern Ireland, Scotland and Wales.