Hollick has been a longtime supporter and donor to the Labour Party, and was one of the founding backers of the New Labour think tank the Institute for Public Policy Research (IPPR). For a time after the 1997 Election he served as a special advisor to Margaret Beckett and Peter Mandelson at the Department of Trade and Industry. Hollick is a supporter of the 2020 Vision political campaign run by Charles Clarke and Alan Milburn, and currently co-ordinating funds for the campaign. He is also a Patron of Prisoners Abroad, a charity that supports the welfare of Britons imprisoned overseas and their families.