A recent World Health Organisation report shows in the UK 9% four and five-year-olds are classed as obese - with the proportion rising to 20 % for 10 to 11-year-olds and it predicts obesity to become the new norm. Trust for London's Child Poverty data shows as a whole, 23% of Year 6 students were obese. This is a higher rate than in England, where 20% of Year 6 students were obese. Both London and England have experienced a slight increase over the last five years (one percentage point). What are your key strategies to tackle London's childhood obesity?