To what extent do you check for country of origin, i.e. what country the food was produced in?
Other statistics on the topic
Ethical clothing sales revenue in the United Kingdom (UK) 2014-2020
Fairtrade food and drink sales revenue in the United Kingdom 1999-2020
Sales revenue of vegetarian food and drink products in the United Kingdom 2010-2020
Consumers preferring environmentally conscious companies in Great Britain 2007-2017