British director Ken Loach has used the Venice Film Festival to campaign for better rights for immigrant workers in the U.K. Loach is premiering his new movie It's a Free World at the event. It focuses on a woman who sets up an illegal employment agency in London for immigrant workers. The director claims the issue is very real, telling an audience at the festival, "We've allowed the working infrastructure of our country to disintegrate. Workers in our factories and supermarkets, in the agriculture and manufacturing industries, have no protection and no voice. "We now have to think about (it) every time we shop in the supermarket for a packet of salad or strawberries, or whenever we employ a builder. "Both sides are losing out - Britain has an unmonitored workforce while other countries are losing people in the prime of their working life who are taking their talents out of their home nations."