Look, sometimes, no matter how hard you try, sometimes you need a bit of luck.

Weather can kill you so fast. The first priority of survival is getting protection from the extreme weather.

To get ready to climb Everest, I did a lot of hill running with a daypack on and a lot of underwater swimming. I would swim a couple of lengths underwater and then a couple above. It gets your body going with limited oxygen.

The SAS Reserve tends to be made up of former paratroopers and commandos who still want a challenge, but it is open to civilians.

One thing I know for sure: it is only by doing what we fear that we can ever truly learn to be brave.

Time and experience have taught me that fame and money very rarely go to the worthy, by the way - hence we shouldn't ever be too impressed by either of those impostors. Value folk for who they are, how they live and what they give - that's a much better benchmark.

Survival is not about being fearless. It's about making a decision, getting on and doing it, because I want to see my kids again, or whatever the reason might be.