Lord Salisbury, one of the senior organisers of the Thames DiamondJubileePageant and chairman of the Thames DiamondJubilee Foundation, also attended the reception.
Now things have come full circle: The DiamondJubileepageant was partially inspired by the work "The Thames on Lord Mayor's Day" by 18th-century artist Canaletto.
Meanwhile, the coxswain of the St Davids' RNLI team joined other volunteers on one of the charity's Tamar class all-weather boats as part of the Thames DiamondJubileePageant.
At the time the river was virtually an open sewer, with the Houses of Parliament once having to be abandoned because MPs were "overpowered by the smell, " according to the official DiamondJubileePageant website .
Since we are fresh from the DiamondJubilee celebrations, and the Thames River pageant it is worth reminding ourselves of what has been lost since the 1977 Silver Jubilee.