Tom and Nikki see film of a young Grandad swimming in the sea with an old-fashioned rubber ring, and his mother attempting to change under a towel. When they go back 100 years they immediately go off to find a bathing machine and change into their own old-fashioned swimming costumes.

• Sharon Miller
• Anne Ross Muir
• Emma Collins

• Nicholas Hoult
• Miriam Margolyes
• Rod Hallett