I used to fly quite a lot from Elstree, so I was used to the humpy runway. Can't say 26 ever presented too much of a problem, although I did used to always aim for the start of the pan for a round out just prior to the threshold - in a C152/C150 this would normally get you on at the numbers and would give you a fighting chance of a turnoff at alpha (the first taxiway on the left after the numbers) without excessive braking or a huge backtrack.
Funnily enough, it was the rarely used 08 which used to give me the willies. Apart from the 2deg downslope (plus trees at the end), the undershoot and threshold were flat, which did make judging the angle of descent very tricky. Just to add to one's woes, there would be a downdraft off the trees if there was a southerly wind, which would handily take 50ft off you. Nice.