Alan Johnston has been held since 12 March

Here is a statement released by the BBC following his release:

We are delighted and extremely relieved that our friend and colleague, Alan Johnston, has been released.

This is wonderful news for his family, friends and colleagues and everyone around the world who has shown their support for him over the past 114 days.

We thank all of those who worked tirelessly - here and in the wider Middle East - to secure his freedom.