The new growth charts in the UK, the UK-WHO charts, comprise prescriptive data from the WHO standard between two weeks and four years of age. Little is known about the development of obesity risk in normal UK infants, who are necessarily not fed according to the WHO recommendations and do not live in constraint-free environments (the selection criteria of the WHO standard source sample), using the new charts. | The risk of obesity by assessing infant growth against the UK-WHO charts compared to the UK90 reference: Findings from the Born in Bradford birth cohort study