The A303 is closed eastbound between the A343 Salisbury Road and A3057 Winchester Road junctions due to an accident earlier this morning.
This is the section heading towards London between the Middle Wallop junction and the Stockbridge / Winchester Road junction and is likely to be closed “most of the morning” so delays are expected as traffic is diverted off the A303.
Update 8.15am
Wave105 Travel have reported that the road is now open again earlier than Police expected:
https://twitter.com/wave105travel/status/451613478722502656
