Former Guantanamo Bay detainee Moazzam Begg says he is overjoyed at Shaker Aamer's release.
Mr Begg said that Shaker Aamer would have to 'relearn' to be a free man after being detained for so long and not having seen his family in many years.
Who will mourn Guantanamo Bay? Hardly anyone.
Shaker Aamer spoke to ITV News last week via his lawyer in his final interview before his release from Guantanamo.
Shaker Aamer, the last British detainee at Guantanamo, has been put on a flight back to the UK. Here's what we know about him.