Screwfix have opened a new branch on the high street between Colliers Wood and Tooting. No free parking whatsoever. And not really the sort of high street you'd wander along looking at shops.
I've always thought the vast majority of their customers go to a branch by car or van. Given the more usual location of them - in an industrial estate, or whatever. Perhaps they're going to start selling soft furnishings?
There's a plumber's merchant not far from them on the same road - Burge & Gunson. Even they have off street free parking.