I don't know how much stuff you have, but I just moved from Wisconsin to Massachusetts (about 1000 miles and I know this is all meaningless since you are in the UK and use metric but I just cannot stop...). The biggest problem we had once we got here was finding what box we put stuff in. As we got closer to moving day, we just started putting things in boxes, anything that would fit in any box. So label boxes extensively. Write everything you put in that box on the box. And if you have reused boxes from previous moves, scratch out old stuff you have written on them. I spent about an hour the other day tearing through all of our storage boxes looking for some textbooks. They happened to be in a box in the bedroom labeled knick-knacks on the top and it was labeled books on the bottom of the box... DOH!