uk meat consumption
Recent paper I haven't read: https://www.nature.com/articles/s43016-024-01070-2
Whilst widely cited Stewart et al., 2021 shows a large decline in meat consumption between 2008 and 2019, Smith, Scheebeek, Balmford and Garnett, 2021 use other data to show a lot of that reduction might be driven by lying about meat consumption. Household budget surveys show just a 3% decline (-4.6 g) in meat purchases in the UK from 2008 to 2019. Given huge differences in raw amounts, it's very hard to know just how much meat people are eating.

Underreporting seems to be increasing over time. This could be the result of many factors, but some studies have found that underreporting is significantly higher in overweight and obese individuals. According to the Office for National Statistics, the National Diet and Nutrition Survey may have underestimated calorie intake by as much as 34% in 2019.