We heard the deal advertised on the radio with this pressure washer at £48 for the weekend. We went online for click & collect to make sure we didn't miss out when we get there. The price in my cart showed as £38.40, with a £9.60 "B&Q Staff Discount".
I'm not B&Q staff, and never have been, so this is either a glitch, or just a mislaballed promo they have going on.
To recreate, I went to the site, logged in, added the washer to my basket using Click and Collect as the delivery method, and it just appeared with the discount.
Good Luck to anybody else who wants to give this a try.