QUOTE
"A new 99p coin would be welcomed by many Brits who find the 99p pricing policy irritating and could save millions in discarded coppers."
My guess is that if such a coin would be introduced, store holders would change the prices to x.98, to stay one penny below the "magic border".
Overhere in the Netherlands, many items are priced x.98 or x.99.
I'm not sure, but I would not be surprised if in Finland, many items are priced x.95, since all prices are rounded to 5 or 0 there.
It's all psychology: stay the smallest amount under a "magic" border, so potential customer have the feeling it's cheaper.