LONG delays are being experienced by drivers as queues back up along the M275.
Traffic is inching forward on the southbound route into the city because of security checks being carried out at Portsmouth Naval Base.
There is heavy congection in Marketway, Queen Street, Winston Churchill Avenue and Unicorn Road.
The queues are backing up to junction 12 of the M27.
Delays are currently 30 minutes and are expected to last until 9.30am.