Ordering UK Regions (NUTS)

I'm designing a form that requires me to collect a user's region using the NUTS 1 standard for the options.

At the moment I'm ordering by the NUTS 1 Code which gives this:
NUTS 1 Regions
North East
North West
Yorkshire and the Humber
East Midlands
West Midlands
East of England
London
South East
South West
Wales
Scotland
Northern Ireland

The East-West, North-South ordering of the English regions instinctively feels preferable to purely alphabetical, but I'm less certain about the arrangement of Northern Ireland, Scotland and Wales.

Is there a standard for the arrangement of the NUTS regions? I suspect there isn't. If not, is there a standard for ordering the countries of the UK which would apply here?