Marcia Collins, the sister of Sean Riggs told Daybreak that she is happy that the IPCC has apologised to her family.
Last year an inquest into Sean Rigg's death found that officers had used "unsuitable force" when he died in Brixton police station in 2008.
Marcia said: "It's been a long struggle, we shouldn't have had wait five years to get to this stage."
More top news
Figures suggest that more than 11 million homes, or 42%, are in credit to their energy company.
Undivided, which represents more than 4 million young people, has set out its top issues in an open letter to political leaders.
John Wombell, 58, was jailed for eight weeks after admitting making the grossly offensive call to the Broxtowe MP's office last November.