He did unfurl his "just stop oil" banner after finishing but it got very little photo coverage from what I saw.

His book has certainly changed the way I think about my kit - I feel quite guilty about putting my old shoes in the bin before they have started to actually come apart, and I may take up Alpkit's £50 offer to replace a zip on my much loved Haglofs top.

One point he makes really caught my attention.

"Under our current social and economic systems it just isn't possible to not be a hypocrite..... the idea that we must be perfect before we act is one of the most pernicious traps of climate inaction. None of us is perfect and we all desperately need to do something"