A survey by the BCC found that 54 per cent of exporters believe the Trade and Co-operation Agreement (TCA) has failed to help them increase sales in the UK's largest overseas market, a rise of 13 percentage points compared with last year. The findings underline growing concern that Brexit-related barriers are becoming more restrictive rather than easing over time. The results come as Prime Minister Keir Starmer pursues a much-trailed "reset" of the UK's trading relationship with Brussels.