Unlike the event eight years before, a fair amount of the 1769 transit would be visible in London. (NASA Goddard Space Flight Center Sun-Earth Day)
Historic Transit of Venus
British explorer James Cook and astronomer Charles Green drew these stages of the transit of Venus in 1769. Cook and Green observed the transit from Tahiti on June 3, 1769.
Like Neil deGrass Tyson writes on twitter, the Venus transits are rarest astronomical events, and they occurs in pairs eight years a part, about every 100 years.
CREDIT: Museum of the History of Science, Oxford
Afbeelding van den weg der planeet Venus Nicholas Ypey, 1761. Rare Book and Special Collections Division, Library of Congress. A beautiful drawing of the transit of Venus of 1761, by Nicholas Ypey. Although the coronal detail on the sun is not actually observable, the path of the transit is accurately depicted.