Burnham has framed closer European ties as a necessity for growth, claiming new deals could add the equivalent of £10 billion a year to GDP by 2040. However, former Labour officials under Keir Starmer warned that rejoining the bloc would cost the UK roughly £5 billion annually due to the loss of a budget rebate established by Margaret Thatcher. While leaders in France and Spain have welcomed the prospect of a British return, the EU has stated that acceptance of freedom of movement remains a non-negotiable condition.
