Apologies. 
Just noticed I posted this in the West Midlands section.
One of the pitfalls of living just close to the border of Staffs and Derby I suppose. 
https://www.ukpunting.com/index.php?topic=267919.0
According to most sources Burton is West Midlands:
"The East Midlands includes the historic and geographic counties of Lincolnshire, Northamptonshire, Derbyshire, Nottinghamshire, Leicestershire, and Rutland. The West Midlands comprises Staffordshire, Warwickshire, Shropshire, Herefordshire, and Worcestershire."