its an excellent wee brush there joe, i have devised a way of getting a hoselock adaptor ontop of the diy poles like skyblue etc by feeding the 10mm OD hose up the pole and through the SMALL hole of the adaptor (as opposed to the the usual fitting round the hole if you see my point) then glue the top of the pole and slide the hoselock adaptor down onto it ( by opening the pull back clips ) and it stays on.
i am thinking of using a hoselock brush or halfords one, or even that one you posted to use on top of it to get the high hard to reach bits like in between balconies etc.
here is some pics of what i mean, i put a hoselock on the vikan to show what i mean but i am thinking of the smaller brushes which i will need to buy.