OK, so just looking at pharmacy (and ignoring all the other things Boots sells for now), according to the government, 44% of the retail pharmacy market is large pharmacy groups. That's Lloyds. Boots, Well, Rowland and Superdrug.
A further 44% of market share is small independents - they'll be almost all in person.
Then the 4 big supermarkets - Asda, Morrisons, Sainsbury’s and
Tesco – together have around 12% market share.
So anyone who uses them will be shopping at Boots. And that's just meds.
Then there's also all the beauty products people get from supermarkets (guaranteed there are people sitting in that queue as they want hair dye before their family / housemates see their natural colour hair! Or hair removing stuff before their mustache and chin hairs grow freely. And those who feel they can't live without makeup etc etc)
Plus, we're in a health crisis so people need meds. And everyone wants hand sanitiser too.
And stuff to sterilise materials.
Plus people will likely be desperate for formula for babies too by now.
All that means massive pressure on those that are still trading online.