On Tue, 30 Jan 2018 12:17:52 +0000
It is utterly craptastic. But searching for "foot" or "feet" alone
produces only a few results, none of them what you're looking for.
Likewise searching for "pad" which might have produced something like
adhesive felt pads.
Wickes is better, but has the annoying feature of clearing the search
box with each search, so if you only need to modify your search terms
slightly you still need to type the whole lot again. But search Wickes
for "pad" and select "ironmongery" to find adhesive felt pads.
Wilko's search is similar; basically dumb but it lets you narrow the
results from sensible categories, so searching rubber and selecting DIY
results in a listing for "rubber buffers" which are nearly the sort of
thing you're looking for. Wilko calls a felt pad a "felt floor
protector".
I often resort to eBay rather than spend ages trying to find stuff
locally.