If four-year-olds and 84-year-olds work and play together, will it improve the health and happiness of the older group? Ten pre-schoolers welcome 11 pensioners into their classroom.

The pre-schoolers and pensioners have been at the same nursery for three weeks now. Can this ambitious experiment transform the way we care for our increasingly older population?

Isolation is a big issue for the elderly, more so at Christmas. This programme brings pensioners and their young friends together as they prepare for a Christmas concert.

Will the friendship between four-year-old Scarlett and 84-year-old Beryl blossom and grow? Also featuring Sylvia, who is 102 and was born during World War One, and Victor, who is 97.

This time the three-year-olds and the 102-year-olds visit a maze for a memory test. Will 81-year-old Lavinia ever find her way out? And a new friendship blossoms over a plate of chips.

The group face a series of challenges with a tram journey and a trip to the supermarket - will everyone return from the shops in tact? And do chickens have belly buttons?

A fierce rivalry breaks out between 102-year-old Sylvia and 87-year-old Ken as they face-off on opposing teams during sports day

It's the end of the experiment. As kids graduate to big school, it's time for a jive, a waltz, and for the older group to see it their memory, mobility and mood has improved.