Vehicle involved in M4 Hungerford collision
Thames Valley Police spokesman, Chris Kearney, said police were called at 9.44am to junction 14 of the M4, at the A338, after a Mercedes vehicle was involved in a collision with the central reservation.
Lanes two and three eastbound of the M4 at junction 14 have been closed.
Lane one eastbound and all three lanes westbound remain open, according to police.
No other vehicles were involved in the collision.
Update 11am
The Highways Agency confirm there is an 'up and over' diversion in place at junction 14 of the M4.
The diversion involves vehicles exiting the motorway and rejoining it on the opposite side of the carriageway, in both directions.
Delays are currently (11am) 20 minutes eastbound and ten minutes westbound.
Update 2.15pm
Police confirm the vehicle, a Mercedes box van, has been removed to the hard shoulder.
Clearage of an oil spillage at the scene is ongoing, with lane closures still in place.
Update 2.45pm
This incident has now been cleared, police confirm