A 72-year-old woman seriously injured in a crash on the M4 on Saturday is still in hospital following emergency surgery.

In the eighth crash to affect the same stretch of M4 in just a month, the woman, from Wales, lost control of her Mercedes coupe, hit with the central reservation and came back across the three lanes, before colliding with a silver Honda on the eastbound carriageway between junctions 14 and 15 at 11.30am.