Children at primary schools across London have been growing their own fruit and vegetables as part of an initiative run by the charity School Food Matters.
By growing food from seed, it helps teach the children where food comes from - the ground, not the supermarket!
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The mayor said a post-Brexit visa system was needed to maintain the supply of skilled migrant workers for London's economy.
Peter Barnett made hundreds of trips from his home in Oxfordshire to Marylebone station without paying the full fare.
Police say he may have attacked more children and urged them to come forward.