As a trainee teacher, I often needed a bit of extra cash to pay for my rock climbing habit. Fortunately, I was training at the height of London Challenge so my schools’ pockets were rather deeper than they are at the moment. That meant I could opt to sacrifice a few days’ holiday and teach some lessons over the break in return for an extra payment. A few days of these payments easily funded a drive up to the Lake District and a pitch for my tent, with a few pounds left over for a pint or two of Wainwright Ale at the Old Dungeon Ghyll pub.