The film director Ken Loach says he has spoken to many people who have experienced the harsh reality of applying for benefits, as he portrays in his film "I Daniel Blake".
Ken Loach says the most vulnerable are being targeted and warns most people are just one pay packet away away from needing help, but it won't be there.
"I Daniel Blake" distributor is Entertainment One UK.
In April, the government plans to cut the new Employment Support Allowance (ESA) for ill or disabled claimants who are judged to be able to work in the future.
The allowance will be reduced by a third to £73.10 per week, the same as Jobseekers Allowance (JSA) and is designed to give an incentive to disabled people to find work.
The Department of Work and Pensions says, "Our welfare reforms are increasing the support and incentives for people who move into work, while keeping an important safety net in place for those who need it."
Charities are calling for a complete overhaul of medical assessments which tribunals show make too many wrong decisions.
Legal advocates say the assessment system is still getting too many decisions wrong, forcing thousands of claimants to go to court.
Organisations say they are overwhelmed trying to support people denied benefits and claim the system is in crisis.