1. Fish and chips were first served together as a dish around 1860 - although their origin is contested.
2. Fish and chips were served in newspaper until the 1980s.
3. Not all fish and chip shops serve vinegar.
You're more likely to see non-brewed condiment behind the till. Non-brewed condiment is acetic acid mixed with colourings and flavourings, and is quicker to make than vinegar. Due to UK Trading Standards it can't be labelled as vinegar, or even be put in vinegar bottles.
4. The longest running fish and chip shop still in operation is based in Yeadon near Leeds.
5. Fish and chips are not as unhealthy as you might think.
6. There is a long tradition of funny chip shop names.
7. Over 250 million fish and chip meals are sold each year in the UK.
8. In Scotland, the first chip was sold in the 1870s.
9. Fish and chips appear in Charles Dickens' "A Tale Of Two Cities".
10. Dedicated chip bags were first marketed in 1910.
11. By 1910 there were roughly 25,000 fish and chip shops around the UK. By 1927 there were 35,000.
12. Fish and chips played a part in the D-Day Landings.
13. And they were excluded from rationing during WW1 and WW2.
14. The current best fish and chip shop in the UK is based in Scotland.
15. You can ask for your fish with scraps (or wi'bits) to get extra crunchy pieces of leftover batter added in.
16. You can also try for a scallop - a piece of potato deep fried in fish batter.
17. The record number of fish and chip portions sold in one day is 12,406 at Marini's in Glasgow. The record was set in 1999.
18. A popular side, mushy peas are made up of dried marrowfat peas which are first soaked overnight in water with 2 teaspoons of bicarbonate soda/baking soda.
19. In Scotland, fish and chips are served with chippy sauce - a mixture of vinegar and brown sauce.
Meanwhile, in the north of England, gravy is the only chip topping of worth.
20. In Belgium, fish and chips are eaten with mayonnaise.
21. There are currently approximately 10,500 specialist fish and chip shops in the UK.
22. The Chinese serve fish and chips with sugar.
23. To get the most out of your fish and chips, Heston Blumenthal advises adding a touch of pickled onion juice.
24. The word batter comes from the French word battre, which means to beat - in reference to whisking the flour and water together.
25. For the best fish experience, listen to the advice of those who live in fish ports - never eat fish and chips when you can't see the sea.
The Beatles agree.
(Facts via The Federation of Fish Friers, BBC and Wikipedia.)