If you'd like to donate per-climb instead of a fixed amount, please fill in the form at https://jackbliss.co.uk/ms, and I'll reach out with the final tally after the big day.

I'm raising money for the MS Society with a bouldering marathon - and I'll be doing it in style. On the 17th of March, I'll be heading to Boulder Brighton to try to climb over 100 boulders in a single day while wearing a suit. 100 is the minimum, but I will be trying to get closer to 150.

I would love it if you donated on a per-climb completed basis - that way, I have extra motivation to climb as many as possible.

The marathon WILL be recorded, and I'll make a YouTube video so you can see the various highs, lows, falls, ascents, big jumps, small jumps, heel hooks, mantles, guppies, sketchy rock-overs, desperately snatched crimps, and all manner of other forms of embarrassing and impressive manoeuvres.

Thank you very kindly for your donation!