During autumn and winter (from October until the end of March) the sun isn't strong enough in the UK to produce vitamin D. That means we have to rely on getting it just from the food we eat. New advice on vitamin D from Public Health England (PHE), which says that adults and children over the age of one should have 10 micrograms (mcg) of vitamin D every day
The government says it has issued new vitamin D recommendations "to ensure that the majority of the UK population has satisfactory vitamin D blood levels throughout the year, in order to protect musculoskeletal health"
Vitamin D supplements are widely available from supermarkets and chemists. Read The Packaging, an make sure it states that each tablet/capsule id 10 Micrograms (mcg) or slightly over.