19% of 11, 13 and 15 year olds met the physical activity guidelines according to the HBSC.
However, a D- was awarded given that boys and girls are consistently in the D and F grade boundaries respectively, as shown below.
HBSC 2014 
(11, 13, 15 years)
HSE 2012 
UKHLS 2010 
These figures are all based on self-reported measures (e.g. questionnaires). Had objective measures been used (e.g. accelerometers/pedometers), the grades may be even lower.
1. Very few children are doing enough regular physical activity
2. Girls in particular have very low activity levels
3. Objective data on children's physical activity levels is needed
Other at risk groups include:
Older children 
Overweight and obese children and young people 
Ethnic minority groups 
Children with disabilites 
Particular attention should be given to specific groups of children who may be at greater risk of low physical activity levels.
Intervention strategies are needed which target some of the barriers faced by such groups.
Physical activity should be encouraged through a number of different means including active play, active transport, and organised sport/physical activity programmes.
Annual assessment of children's physical activity levels is needed, utilising objective measures on a nationally representative sample across all age agroups (2-16 years).
% of boys and girls achieving 60 minutes MVPA per day according to multiple surveys, assessing different age groups
 Department of Health. Start active, stay active: A report on physical activity for health from the four home countries' Chief Medical Officers. London, UK: Department of Health, 2011.
 Brooks F, Magnusson J, Klemera E, et al. HBSC England National Report 2014. Hatfield, UK: University of Hertfordshire, 2015.
 Ipsos MORI. Health and wellbeing of 15 year olds in England: Findings from the What About YOUth? Survey 2014. Health and Social Care Information Centre, 2015.
 Scholes S, Mindell J. Physical activity in children. In: Craig R, Mindell J, eds. Health Survey for England 2012. Volume 1: Health, Social Care and Lifestyles. Leeds, UK: The Health and Social Care Information Centre, 2013.
 McAloney K, Graham H, Law C, et al. Fruit and vegetable consumption and sports participation among UK youth. Int J Public Health 2014;59:117-21.
 Steele RM, van Sluijs EMF, Cassidy A, et al. Targeting sedentary time or moderate- and vigorous-intensity activity: independent relations with adiposity in a population-based sample of 10-y-old British children. Am J Clin Nutr 2009;90:1185-92.
 Griffiths LJ, Cortina-Borja M, Sera F, et al. How active are our children? Findings from the Millennium Cohort Study. BMJ open 2013;3:e002893.
 Carlon SL, Taylor NF, Dodd KJ, et al. Differences in habitual physical activity levels of young people with cerebral palsy and their typically developing peers: a systematic review. Disabil Rehabil 2013;35:647-55.
HBSC = Health Behaviour in School Aged Children Study; HSE = Health Survey for England; MVPA = Moderate-to-vigorous intensity physical activity; UKHLS = UK Household Longitudinal Study; WAY = What About Youth? Survey