Revealed: the secret ‘forced labour’ migration route from Vietnam to the UK

Observer investigation uncovers new trafficking gateway to the west after 500 migrants found in shocking conditions in Serbia

When construction began to great fanfare in 2019, the Linglong car tyre factory outside of Belgrade was heralded as the jewel in the crown of Serbia's burgeoning strategic partnership with China.

Two years later, 500 Vietnamese construction workers were allegedly found last month working in conditions of forced labour with their passports confiscated and living in cramped and degrading conditions.