this is what a bike goes through on the London's streets.

if the Swiss can do it why can't we...

the painted lines on the streets are the worst hazard they cause so many bumps and vibrations you can feel from the video what punishment the wheels take, 

surprisingly the majority of bumps are caused by the painted lines that indicate parking and lanes.

this is because rather than take off the old lines highway maintenance just go over the top of the existing ones, this causes the lines not only to gather height but what happens after time is the that the edges wear off leaving a crown in the middle so even just riding in the centre of the lines could cause the tyres to lose grip. It is best to avoid these lines meaning you have to ride centre of the lanes but then this aggravates drivers and London drivers are not sympathetic to cyclists , you think they would be by now.