The Erasmus program enabled a lot of Britons to study abroad and widen their perspectives. I think it brought a whole lot of benefits to the UK, and while it obviously benefited almost every youth participating in it, I think that the UK as a whole probably benefited the most.
He was (likely) wrongfully imprisoned for a crime that occurred 26 years ago. So it’s both long imprisonment and the costs of trying to overturn the conviction, including fact seeking, labs, lawyers, prosecutors, judges etc.