Disability payments: 'Many will be pushed into poverty'
10 June 2013 Last updated at 12:45 BST
A new system of disability benefits has begun to take effect across England, Scotland and Wales.
Personal Independence Payments (PIPs) are replacing Disability Living Allowance (DLA) as part of the government's welfare reforms.
Disability charity Scope has warned that almost a fifth of claimants - 600,000 people - could eventually lose their benefits, but the government has defended the new system.
Marc Bush is the head of policy for the disability charity Scope, he spoke to the BBC to explain his concerns about the new assessment system which he said was "fundamentally flawed."
He also suggested that "significant numbers" of disabled people would be "pushed into poverty."