By Jessica Frank-Keyes Plans to introduce ‘not for EU’ labelling on food products across the whole of the UK is already “having an impact on investment”, one expert has warned. It comes after the Food and Drink Federation (FDF) wrote to cabinet officer minister Steve Baker warning about “our sector’s deep concerns” over the proposals, brought in under post-Brexit rules governing the relationship between Northern Ireland and the trading bloc, as first reported by the Financial Times. Under the Windsor Framework agreement, since last year meat and dairy products moving from Britain to Northern I…