The food hygiene knowledge and self-reported behaviours of pupils (4 and 14 years; Key Stages 1- 3 in the English system – or Scottish equivalent) were determined using age-appropriate knowledge quizzes completed by 2,259 pupils across England, Scotland, Northern Ireland and Wales. Attitudes towards food hygiene and barriers to performing desirable hygiene-related behaviours were established through semi-structured interviews with 82 pupils who completed knowledge tasks in South East England. British Food Journal 2006 ; 108 706 - 720.