Stuck in stationary traffic on M4

Big accident between Jnct 15 and 16, car and van apparently. Been here for 20 minutes so far, nightmare !!

Theyve closed that section off, following a diversion through the towns now have to get a move on when back on the m4 by the look of it

Just gone past junction 10, no probs here so far!

Still not moving, Traffic reporter on radio just mentioned that they were deciding whether to turn us around or not. Apparently the air ambulance had to land. Bad news for all concerned, not least those involved on the accident.