Former Brussels correspondent Adam Fleming explores how businesses have adapted to new trade rules, three years after the UK left the EU.

He finds out why allergy-friendly nutrition bars are being sold to Australia and the Middle East instead of the EU, and the reason exports of British eels have ground to a halt.

Presenter: Adam Fleming
Producers: Diane Richardson and Sally Abrahams
Editor: China Collins
Production Co-ordinator: Janet Staples
Sound: Neil Churchill