Early family holidays consisted of caravanning in the UK. "We once pushed the boat out and went to Torremolinos," says Mike, 62.
"I really discovered travel at 50," says Christine, 61.
Her numerous solo trips include Peru's Inca trail, going beyond Everest base camp, and exploring Outer Mongolia. This year alone she has toured Laos, Cambodia and Vietnam and been gorilla-spotting in Uganda.
The couple go on at least one big holiday together a year, often a cruise.