A German landlord who has long been at the centre of controversy in his country of origin has become one of London's biggest property tycoons.

70-year old Henning Conle, long-renowned in his home country of Germany for shoddy buildings and acrimonious tenant disputes, has amassed a portfolio of prime property in London worth nearly 2 billion pounds. His London acquisitions encompass a bevy of iconic or historically significant buildings at the centre of the city, including the Kensington Roof…