Statue   

The statue (next to a lamppost), comprises a (ghost of a) pilgrim father, looking over the shoulder of a small Bermondsey boy from about the 1920s (the 100th anniversary of the sailing of the Mayflower), and a dog (a Staffordshire bull terrier), standing on its hind legs.
The comic the boy is reading (made possible at night by the light of the lamppost) is called 'Uncle Pete and Kevs Sunbeam Weekly (actually spelt as Weakly wihout a 'Y'). This makes us wonder why the plaque calls the statue 'Sunshine' weekly, and suspect that it is a mistake.
The comic (which we believe refers to an actual comic called just 'Sunbeam') shows scenes of how America had developed since 1620, and the pilgrim is looking at it in apparent horror.
There is much other detail to be seen, including various tools and implements. In the pilgrim's pocket is a lobster claw, a fish, a crucifix, a totem pole and an A-Z dated 1620. Some sources say that the A-Z refers to New York rather than London, but we don't believe it has ever been published in America.
The pilgrim has a second pocket, and it is said that any visitor from the new world who places a small object in it will find a new and more rewarding path in life.
A nearby information board gives details about the sculptor, the Pilgrim Fathers and the native Americans who helped them.

'(+Kev)', refers to sculptor McLean's assistant, Kevin Bolger. the Latin 'Fecit' means 'made by'. The word (or initials) 'WHY' is unexplained, indeed, there's a lot about this sculpture that is unexplained, which might explain the WHY!