alan_m wrote:

My local Lidl stores have red/green illuminated signs to say which tills
are open.* There is an public address announcement to say till XYZ is
closing, the sign turns red BUT the till isn't closed until everyone
with goods on the belt is served.

Same here, I have been relatively impressed that they open a till or two
to cope with a peak of customers then close them again within minutes,
presumably so the staff go back to shelf-stacking etc.