The policing watchdog for Northern Ireland policing has found no evidence the Royal Ulster Constabulary (RUC) was involved in a loyalist gun attack on Gerry Adams 30 years ago.
The paramilitary Ulster Freedom Fighters (UFF) opened fire on a car containing the Sinn Fein president and four other men as they travelled from a Belfast court.
The driver, despite being hit twice, managed to reach hospital. Mr Adams had claimed the security forces had prior knowledge of what happened or had been involved.
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The man was taken early this morning to a south London police station where he remains in custody.
The Chancellor faces tough talks to build a Government while also dealing with the challenge from a resurgent far right.
Watch John McDonnell's speech at Labour Party conference 2017 live as he speaks to Brighton the audience from 12.15pm.