Not all Mysteries are Secrets

Some of them are in plain sight, in the architecture, as here, on Clerkenwell Kid.

What you see through the keyhole is Alice's hand, opening the door into the garden.

Who is George Arthur Fripp...

...and what is he doing under the sink?

Please advise in the comments section. Note use of the article...may be my sink, may be your sink, may be the sink of a heretofore unnamed entity. As always, no pressure except that of your own fertile minds.