Live updates as 150-litre oil spill causes tailbacks on the M4 WalesOnline There is heavy traffic on the M4 as more than 150 litres of oil is cleared from the carriage in Neath Port Talbot. It follows and earlier coach fire between J43 A465 (Llandarcy) and J44 A48 / A4230 / B4291 (Llansamlet). One lane is closed and traffic ... |