Slow moving traffic due to earlier vehicle fire

There are delays on the M4 eastbound in Berkshire due to a vehicle fire between junction 7 for the A4 (Slough West) and junction 6 for the A355 (Slough/Windsor). There's congestion to junction 10 for the A329(M) Wokingham/Bracknell. All lanes have re-opened but delays are continuing.