The Prevalence of British Veganism

In an article for the BBC, Dr Michael Mosley wrote:

There are now four times as many vegans in the UK as there were four years ago.

This article looks at the survey data behind this claim, and compares different survey questions for estimating how many people are vegan.

How many vegans are there?

The Food Standard Agency’s Food and You survey seeks to estimate the public’s reported behaviour, attitudes and knowledge on food and food safety.