Three years ago I joined the excellent Acer team alongside my fellow journalists and climbed the three tallest peaks in the UK, raising money for Mountain Rescue.

This year I return, with a dodgy knee and bad back (getting old is fun), to try and drag my body through nature again - this time for the excellent cause of raising money for the Royal National Lifeboat Institution, which has saved a staggering 140,000 lives at sea since 1824.

It's not going to be easy, but nothing worthwhile ever is. I'd really appreciate your support, and if I make it back in one piece, I'll happily buy you a pint or seven as a thank you.