I’m not a Lidl shopper, but once on a long journey my grandson was sick all over the car, himself his car seat, we were passing a Lidl, so I went in bought packets of wet wipes, water, antibac for the initial clean up, then took him in to try and buy some clean clothes, they only had pyjamas, but that was fine, and their toilets were big, spotlessly clean and well equipped.
Another time on a long journey, I raced into one with a desperate child, and they let me use the staff loos, Thankyou Lidl!
When our Waitrose opened, there were no toilets, which I found annoying, but they’ve since installed some, must have had a lot of complaints.