HOW TO MEASURE YOUR SIZE
Measure your foot from heel to toe. (bottom of the foot on a ruler)
Refer to Size Chart
Compare your foot length with the chart.
The size 5 to 7 mm bigger than your foot length will suit you best
Should be more or less your regular UK size.
Keep in mind leather stretches.
The lengths in the chart indicate the sizes of the shoe inside, same as the last used to manufacture your shoe.