Police are at the scene of a "serious collision" on the M4 .

The accident has taken place between junctions 47 to 46.

A statement from South Wales Police reads as follows: "We're at the scene of a serious collision on the M4 Eastbound between Junctions 47 to 46.

"Traffic is currently backing up. It is expected to remain closed for some time; please avoid the area and use alternative routes where possible.

"We're grateful for your patience."

16:19 Robert Dalling

Lane blocked

Traffic monitoring service Inrix reports that one lane is blocked, resulting in queueing traffic, due to the accident on M4 eastbound from junction 47 A483 (Penllergaer / Swansea West Services) to J46 A48 (Llangyfelach).

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