A series of stamps is to go on sale commemorating the British scientist Charles Darwin, 150 years after the publication of his seminal work on evolutionary theory - On the Origin of Species.
The jigsaw-shaped stamps symbolise how the different areas of study from zoology and anthropology to botany and ornithology pieced together to form his new ideas on evolution.
The naturalist, who was born 200 years ago, shocked the worlds of science and religion when his theory of natural selection was first published.
Those theories though went on to form the basis of the modern evolutionary theory.
Alongside the jigsaw stamps, the Royal Mail is also producing a sheet of four stamps illustrating wildlife from the Galapagos Islands, including the flightless cormorant and the giant tortoise.
Since 1982, there have been 16 stamps celebrating Darwin, more than any other man or woman, excluding the Queen and other royalty.