Way back in 1979 Dragon's Dream released the first of three Dan Dare reprint books. For the first book: The Man From Nowhere, Frank Hampson and Don Harley redrew the first frame of each episode. According to the book, The Man Who Drew Tomorrow FH pencilled the illustrations and DH coloured and inked the rest. Although, I would say this first frame is ALL Hampson compared to the second illustration which has Harley doing finishes.
You can buy Titan Book's release of The Man From Nowhere here.