Two global unions are using London Fashion Week (LFW) as a platform to protest against the abuse of workers who deliver clothes - claiming event sponsor DHL is a key culprit.

They are calling for Deutsche Post DHL to become "a responsible supplier to the fashion industry", but say it instead relies on agency workers to toil on lower wages and with no job security in Britain, Malaysia, Indonesia and India.

Other allegations include illegally firing workers in Turkey and using lie detectors against staff in Colombia, Panama and South Africa; and staffing a US factory with students who thought they were on a cultural exchange.

The International Transport Workers' Federation and UNI Global Union are urging exhibitors at LFW to question DHL on its practices.