56-year-old Stephen Padden, his son Thomas Padden, aged 20, and Thomas’s partner, 23-year-old Louise Evans, all from the Porthcawl area, tragically died last night after the red Peugeot 406 they were travelling in left the M4 corridor.
A 51-year-old female and six-month-old baby, believed to be Stephen Padden’s wife Suzanne and Louise and Thomas’s son Logan, were also taken to University Hospital of Wales with less serious injuries and remain in a stable condition.
The incident happened at 2330 GMT on Monday. The westbound carriageway was closed throughout the night but has now reopened.
Officers are appealing for witnesses to the single-vehicle collision, involving a red Peugeot 406, or anyone who saw the car beforehand to contact the Roads Policing Unit on 101 or the independent charity Crimestoppers anonymously on 0800 555 111.
In particular, police would like to speak urgently to a couple who are thought to have stopped momentarily after the collision.
Sgt. Louise French of the Roads Policing Unit said: “We are keen to speak to anyone who witnessed the collision or who drove past soon afterwards.
“We would also welcome information from anyone who saw the vehicle being driven prior to the collision.”