The problem of what to place on the fourth plinth in Trafalgar Square has exercised the minds of the good and the great for a considerable number of years.
The current solution is to invite members of the public to make an exhibition of themselves.
On our recent visit to the National Gallery an opera singer was unceremoniously lowered onto the plinth for his few minutes of fame. He chose to sing arias and to persuade the great unwashed gathered beneath him of the virtues of opera. Unfortunately the wind carried his voice far far away, so that perhaps only Nelson could hear him. It also sprayed the water from one of the nearby fountains, adding to the vagries of London's "summer" weather.
The beautiful St Martin-in-the-Fields designed by James Gibbs in 1721 has recently undergone restoration, and its cleaned stone shines brightly in the north east corner of the square.
All of this a brief interlude before facing the inevitable crowds in the gallery, which made for a rather focused visit.