Picture shows how Christmas favourite Quality Street have shrunk since 1998 

The image, which shows four of the iconic purple tubs side by side, has sparked outrage on social media after it was posted on the Quality Street Facebook page by customer Charlotte Stacey Hook.

In her post, Ms Hook claims that the oldest tin, pictured on the far left, was bought in 1998. However, some chocolate fans have argued that it was the design used in the 1980s.

A Nestle spokesman said it was difficult to tell when exactly each tin was made, but that the newest tub appeared to be from 2014/2015; the ones in the middle from the 2000s; and the one on the far left from the late 1990s or early 2000s.