London's crane count must run to a couple of hundred at least. Kings Cross/St pancras and it's environs have more than a dozen. Other large projects with at least half a dozen are white city, Ashburton Grove, Wembley and ctrl at stratford. A housing project at Old Ford in East London has four fair sized cranes plus smaller ones.
Cross any bridge in central London and you'll see cranes working on all sorts of sites.
By the way has any one noticed that cranes tend to be painted white these days where as in years gone by they tended to be mainly bright red. Any Ideas?
Also noticed that part of a crane has been erected on the waterfront at Battersea power station.