Thanks dazmond. I'll get the pole, brush, hose, reel from Gardiner - some say 6mm microbore, others say 5mm/8mm yellow PVC, I don't know which would be preferable, I'm residential only but 100m yes definitely.
With the reel, I was thinking, rather than winding it all the way in at the end of one house, only to get it back out at the next, would a nearby hook, maybe from the ceiling of the van, be useful to hang some of the hose on? So it's a quick lift off, rather than wind it back out again. Like learning which rung to extend the ladder to, presumably it will take time to learn how much hose to unwind from the reel.