Why do the British drive on the left?

Why do we drive on the left side of the road in the UK but most

Left- and right-hand traffic - Wikipedia

EUROS Insurance WHY DO THE BRITISH DRIVE ON THE LEFT?

The right and wrong sides of the road as explained by the English

Why do the British drive on the left side of the road?

Why do the British drive on the left? : r/CasualUK

America and Great Britain Drive on Opposite Sides of the Road

Why do some countries drive on the left side of the road? - Car Keys

Why Do Drivers in the UK Drive on the Left? - AxleAddict

Chart: Which Side Of The Road Do You Drive On?

The Voice of the Zamorin: Why do the British drive on the left