You can't navigate Central London without reference to Traffic - whether you are on foot, two wheels or four wheels.

Central London has its own unique breed of traffic; there is an uneasy symbiosis between the different 'breeds' of traffic, with each individual sub-set convinced that their needs and priorities are the most important. 

The pecking order is determined by size (the bigger you are the more people will give way), officialdom (TfL vehicles certainly think they have the right of way over others) and chutzpah (he who dares wins, manners are rather rare).