An independent report by the Hillsborough Independent Panel published in September found police had changed witness statements to blame Liverpool fans for the tragedy.

BBC: Margaret Aspinall

He said there had been a campaign to blame Liverpool fans for the tragedy and has called on the prime minister to issue a formal apology.

BBC: Hillsborough decision 'a victory for democracy'

Sheila Coleman, of the Hillsborough Justice Campaign, said a misinformed minority of people still believed Liverpool supporters caused the tragedy, even though the Hillsborough Independent Panel said police and other agencies were at fault for the disaster and subsequent cover-up.

BBC: Hillsborough memorials unveiled in Liverpool