Bus numbers

Very nerdy this, but what is the origin of the local bus numbers?

210 is partly explained by the old system of London single-deckers being allocated numbers from 200 up to 599 in some previous era. The 210 was single decker until quite recently.

But what is the W in W7 and W3 for? Apparently most prefixes refer to places, eg P is for Peckham and RV for 'river'. But I can't think of anywhere with a W along those routes.

Some interesting background here


Cone on, there must be a bus geek on this forum!


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