We’re currently crawling along on the M25, being driven by Erica Bagg (with her boyfriend Sam along for the ride), towards Heathrow. Now that I am definitely on my way I no longer feel quite so scared / excited, but instead a Zen-like calm has descended. Probably best that I avoid thinking about the whole jumping out of a plane at 29,000 feet with a massive 7 seconds of zero-g freefall before I reach the high-altitude terminal velocity of 200mph, hurtling towards the mountain side….

