Full article is here:

www.bbc.co.uk/news/business-22807887

Its bloody obvious tbh, a large range of chocolate bars are all around the same price in various shops.
In Ireland its usually 80c for a pile of stuff, eg mars bar, snickers, m and m's and so on.

If there was no price fixing you'd expect some competition and even small difference and prices like 78c, 76c but nooo its always round figures, ofc the shops themselves slap a profit on and always make it a round number.

Once a few shops do it, amazingly enough all the rest of the shops end up doing it in a matter of days. Hilarious really.