Gromit
/// The doctors attributes the rise to lack of vitamin D from sunlight. The Mail attributes it to children of immigrants.///
This statement by you is pathetic.
It has also been attributed to children, white, black, skyblue-pink spending vast amounts of time on computer games, instead of hours outdoors frolicking in the sun.
But if you must highlight the colour factor, then isn't it also possible that with their skin pigmentation a darker skin, suffers more from the lack of sunlight that a pale skin?
The North was also highlighted, not just Southampton.