Here's all of them, along with information on the mentioned numbering scheme:<p><a href="https://en.wikipedia.org/wiki/List_of_bus_routes_in_London#Classification_of_route_numbers" rel="nofollow">https://en.wikipedia.org/wiki/List_of_bus_routes_in_London#C...</a>
I visited the London Bus Museum (not the Transport Museum in Covent garden) <a href="http://www.londonbusmuseum.com/" rel="nofollow">http://www.londonbusmuseum.com/</a> There Bus pre-first world war with the 164 (my local route) still with the exact same stops.
Also relevant <a href="http://footprintsoflondon.com/2016/01/so-why-do-green-line-carry-route-numbers-in-the-700s/" rel="nofollow">http://footprintsoflondon.com/2016/01/so-why-do-green-line-c...</a>