Well, Vax copied Dyson on that score where its slide down dust brush on the crevice tool is concerned. There's a previous thread about that on here.
To be honest though, from what Ultraperformer has posted, I think the tool from Wilko has slightly longer bristles - certainly the video I've posted on You Tube can attest to the almost silent quality - but then I am using a Miele vacuum cleaner at the other end.