Christine's passion for adventure began when she met a woman who had done the Inca trail.
But a severe bout of salmonella in India had left Mike with a weakened stomach, and he wasn’t keen on 'roughing it'.
"So I went on my own," says Christine, pictured here in Ethiopia.
"It turned out there was only one other man going on the trip, but I went ahead. I didn't mention it to Mike until I got back. It's not a problem, if you can't trust each other after 41 years what's the point?"