Is it possible that the person visiting TLR in prison isn't actually Ryan but someone masquerading as him to gain visiting rights?
Is Ryan visiting the prison with two members of the criminal gang, pretending to be his relatives, in order to help TLR plan his escape?
Outlandish theory: one or more of Ann, Daniel, Nev and Richard are involved with facilitating Ryan's prison visits, not because they want to help Ryan but because they want TLR to escape so they can enact revenge upon him. Maybe now Ryan is older he has more perspective on TLR. Maybe this is why episode one found a way to remind us that Nev is a millionaire and can perhaps pay to get things done.
I don't actually think the plot will be this convoluted, but it's fun to speculate.
When I googled this series, something came up about the filming of series three which has given me another theory about who is aiding and abetting Ryan but it may be slightly spoilerish so, frustratingly, I'm having to sit on it for now.