According to legend King Charles the Second, who ruled Great Britain for twenty five years after the restoration of the monarchy in 1660, was told, when the astronomer royal Sir John Flamsteed complained about the ravens, that the safety of the kingdom was threatened if the birds ever left the Tower of London. King Charles then decreed that there should always be at least six ravens there to prevent the Tower – and the kingdom – falling down. History does not record what Flamsteed thought of this decision but he had to accept it.

There are over 400 sculptures scattered across London with several in the Bishopsgate and Liverpool Street area. My favourite is a gigantic sculpture outside the Broadgate exit of Liverpool Street station called “Fulcrum” by the American sculptor Richard Serra. I am absolutely taken by it not only because of its size, and at 55 ft or 16.7m height it is sizeable enough, but because of its simplicity and elegance.