This is the harrowing moment a Polish slave who was forced to work 20-hours-a-day making greeting cards was rescued by police from a squalid loft.

Footage released by officers shows the man cowering under a workman's jacket in the corner of an attic after he was forced into a life of servitude by Edward Zielinski.

The slave was one of two men, alcoholics who could not speak English, who were paid as little as £10-a-week to work from 8am in the morning until 4am the following night.

Zielinski, 42, has now been jailed for 40 months after he admitted two charges of human trafficking at Nottingham Crown Court. In May and June this year, Zielinski, of Nottingham, exploited two vulnerable Polish men, locking his victims in the loft during the night forcing them to urinate in plastic bottles.

The first victim came to the UK of his own accord in 2008 and initially lived in London but got into debt with Zielinski's cousin, owing around £800 for the cost of a new passport and other bills. He was sent to Nottingham to work for Zielinski to pay off the debt.

When he arrived at a house in the Radford area of the city, he was put to work making greetings cards, working up to 20-hours-a-day from 8am to 4am with only limited breaks.

He was often threatened with violence and even beaten if Zielinski didn't think he was working hard enough.