Police charged Shaun Power, 33, of Kettering Road, Romford. He has been bailed to appear before Highbury Magistrates' Court on 12 May.
Two people have previously been charged in connection with the prison escape.
In addition, a 19-year-old was arrested and bailed but will face no further action, and a 24-year-old woman has been bailed pending further enquiries.
A man has been charged with harbouring a prisoner who escaped from Pentonville jail in November.