Map of the various combined authorities in Great Britain.
  Greater Manchester Combined Authority
  Liverpool City Region Combined Authority
  Sheffield City Region Combined Authority
  North East Combined Authority
  West Midlands Combined Authority
  West Yorkshire Combined Authority
  Proposed Buckinghamshire, Oxfordshire and Northamptonshire Combined Authority
  Proposed Derbyshire Combined Authority
  Proposed Nottinghamshire Combined Authority
  Proposed Tees Valley Combined Authority
  District not part of a combined authority
  Scotland (Local Government devolved)
Own work
MrPenguin20