A section of the motorway was closed in both directions following a crash. The eastbound and westbound carriageways had been shut near Reading following the crash which saw emergency services - including the air ambulance - on the scene.
National Highways says the M4 eastbound junction 11 to junction 10 and M4 westbound junction 8/9 to junction 10 have both reopened. However, the slip road from the M4 eastbound at junction 10 remains closed, according the agency's latest update.
FOLLOW OUR LIVE BLOG FOR THE LATEST UPDATES:
You may also like
Beyoncé Cowboy Carter tour reviews call concerts 'masterwork' and 'powerful'
Virgil van Dijk sends Liverpool fans clear message after Trent Alexander-Arnold booed
American gives verdict on UK Chinese food – but Brits say he's 'eating it wrong'
Line of Duty's Anna Maxwell Martin reveals she can't return to BBC drama for behind-the-scenes reason
Adani Group stocks surge over 8 pc as markets rebound strongly
