Out nearest Asda caf� advertises the sale of bacon rolls. This is illustrated by a massive poster depicting a bacon roll on a side plate (with nothing else on the plate or alongside it). The words 'Serving suggestion' appear prominently on the poster. (Gosh, I'd never of thought of that. Putting it on a plate! What a fantastic suggestion!).
A swimming pool in Ipswich displayed this sign by the showers: "Swimming costumes must always be worn". It's about 10 years since I last went swimming there, and continuing to comply with that sign is getting increasingly uncomfortable and unhygienic ;-)
I've seen several places advertising 'aluminium windows'. I'd have thought that glass ones would be easier to see out of ;-)
When I was teaching, a filing cabinet was labelled 'P.E. stationary'. Perhaps that's why there are so many unfit kids around these days?
Further to your reference to 'free cash withdrawals', Sheffield has loads of shops with the sign 'Free Off Licence'
Chris