UK food security warning as Labour Brexit betrayal puts supply at risk / How smarter greenhouses could improve the UK's food security / Deeper story behind UK's fragile food security can be traced to demise of farming's golden age / Nature decline and rising temperatures pose risk to UK food security, shows report / Labour's 'lack of commitment' on farming puts UK food security on a 'knife's edge' / Britain's new food security index is a poor excuse for policy / 'It's too wet': UK food security at risk because of record rain, farmers warn