Egg shortage at Easter: no yolk

Heiko Wolfraum/DPA/Press Association Images

There has apparently been a run on eggs in the UK, with a threat of shortages in UK supermarkets. There's a real risk of a scramble in the aisles very soon. This isn't some sort of Easter joke, neither is it the result of some over-enthusiastic pancaking.

It's a serious risk, cased by new EU regulations. So what's going on?