https://www.theguardian.com/business/2017/jul/24/sweets-are-shrinking-youre-not-imagining-it-ons-tells-shoppers

For all those shoppers who feel chocolate bars, cartons of drink, toilet rolls and countless other products have been getting smaller, now comes official confirmation. A grand total of 2,529 products tracked by the Office for National Statistics have decreased in size over the past five years. Only 614 have got bigger.

In an analysis of the phenomenon known as “shrinkflation”, the ONS explores whether these dwindling portions are making life more expensive. The theory goes: if a chocolate bar gets smaller but the price stays the same, that is a form of inflation because you are paying more per bite.

The issue has regularly made headlines over the last year after the decline in the value of the pound following the Brexit vote. This increased the price of imported ingredients for food manufacturers and they looked for ways to recover their extra costs. Toblerone, owned by Mondelez, spaced out its signature triangles so that there was less chocolate in each bar. Mars has shrunk its sharing bags of Maltesers by 15%. Doritos have downsized from 200g a packet to 180g, Peperamis have lost 2.5g and are now 22.5g and a big box of Coco Pops has been reduced from 800g to 720g.

The statistics office also said there was no evidence that the Brexit vote was to blame and that shrinkflation pre-dated the EU referendum.