I thought people would find this interesting. A new linear park is being created in Camden, using former sections of the North London Line. They are proposing to run between Camden Gardens and York Way, utilising the various railway bridges alongside the line. Their section just next to Camden Road station has just been given planning permission, from Camden Gardens to Royal College Street.
I would have been happier seeing more of the route being brought back to railway use, including the other side of the island platform at Camden Road
NR were asked if they had any near-future plans for the unused trackbed through Camden Road, which they didn't. The Highline has been designed such that it doesn't obstruct any potential railway developments in the future, and I believe the terms of Highline's lease are such that NR can take the space over at a future date if required for railway purposes.