Should I expect a London dry Gin to be made solely in London, from juniper berries grown solely in that city? (London dry gins are made all over the world. Most of those distilled in this country are made from berries grown in Italy).
Sunk has already mentioned Yorkshire tea, which is sold alongside English Breakfast tea. If you don't fancy tea though, how about a cup of Italian coffee (which Italians claim is the finest in the world, even though it's not grown there)?
The 'cane versus beet' argument is often given voice to here in Suffolk, as British Sugar's 'Silver Spoon' factory is in Bury St Edmunds and sugar beet is an important crop to many farmers in East Anglia. However it's PRICE that ultimately dictates what the supermarkets buy, and what shoppers will buy from those supermarkets. At one time the Tesco superstore in Bury St Edmunds was selling Silver Spoon sugar (rather than Tate& Lyle's, which was being sold in all of their other stores in the UK) just to keep the locals happy. (The store is accessed off the same roundabout that also serves the Silver Spoon factory, with many British Sugar employees shopping in there). However, in order to charge the same price that they did in their other stores, they were selling it at a LOSS.
Similarly, I've been into our local Co-op and seen both Tate & Lyle sugar and Silver Spoon offered side by side. (Once again, the retailer was trying to support a local business). However most people still bought Tate & Lyle anyway. Why? Because Silver Spoon was 40p per kilogram bag dearer!