The 80-year-old little girl...

In the early 1930s, a little girl called Mary was filmed by her father eating sand on a beach, sitting in her pushchair, throwing sticks for a dog, pushing a pram, riding a pony and playing with her family.

75 years later, in February 2009, Mary’s London neighbour created a film from the original home movies to celebrate Mary’s 80th birthday, sound-tracking it with “Remember” by Harry Nilsson.

The result is a very powerful and deeply moving portrait of the nature of time - the things that it changes, and the things that remain the same.

Oh - and watch out for a spectacular surprise at 1:30…