Jamz this is one of the best internet threads/rants I've read in ages. Fair play to you mate. Its exactly the same situation with my work car car park when I drive to work. Most of us have designated spaces. Some don't and shouldn't be there. Some of these arses who don't have a designated space decide to park in MY space because its the furthest away from the security hut and think security won't see. So it means when I come in to work, if in the car, I've no space. So I just block them in. Then, surprise surprise, half an hour after I've arrived in work, the owner of the other car needs to go out or whatever. So, I say I'll be there to move my car in about....ohhhh, soon (as I'm a very busy man you know!

). I return MUCH MUCH later to see the very pissed off person apologising profusely. Plus he's an hour late to wherever he's supposed to be.
Back to the Tesco situation, it pisses me off too. As someone mentioned earlier on, if we were to park in disabled or parent's/kiddies spaces, there'd be uproar! I DON'T PARK IN DISABLED SPOTS OUT OF COURTESY AND THE FACT I'M NOT A WANKER. Why should us bikers have to endure others being w****ers by parking in our spots? :smt013