Independent: Britain is to commit itself to a massive increase in domestic food production to feed the population in the next 40 years, The Independent on Sunday has learnt. The UK will announce tomorrow that it intends to “play a full part” in meeting a United Nations target of raising food production by 70 per cent by 2050. The surge in homegrown crops and meat — which has echoes of the Dig for Victory campaign of the Second World War — is needed to cope with rising global population levels …