I agree with your last post Anotherjohn. It does strike me as a bit odd that the FSA encourages the display of the hygiene signs. Ok, so given the hoops the jump through, I do accept that getting a 5 rating is an achievement but putting up any sign is really like one that reads:

'Our food probably won't kill you'

Would you want to shop/eat there if it actually said that?

I suppose the better message to take from all this is that by taking part in the inspection process, and no food preparation site outside the home has a choice in that, there is a commitment to adhere to some standards.