Perhaps that's because when walking on pathways the etiquette is to walk on the left! Ramblers etc. Indeed even in the city within our very own Waverley Station you are asked to keep to the left. I'd imagine other UK railway stations say the same.
The Highway Code isn't specific for individuals pavement walking. It does suggest though that you should not stay close to the kerb when your back is to the traffic i.e. keep to the left of the pavement!
The rule for walking, where there is no pavement, is generally face the oncoming traffic, keep right.
To be fair there's general anarchy for path and pavement walking.
Has anyone mentioned pedestrians walking right down the middle of the pavement?