In Luton Airport last night I bought a latte from Pret a Manger ( well- known McDonald's owned business). The board clearly said it was £1.85. I tendered £2 and received 0.25p change.
Now I don't know about you but if this happens to me I always tell the person serving me they have made a mistake.
" Nah" she said. " That's the price from Monday, but there won't be anyone here to change it then."
So there will be hoards of people checking their change today and thinking they have got one over on Pret/McDonald's