Would you not be better off, turning left at the second Fontwell roundabout.But we already have the M27 south-coast motorway in Southampton. It goes to Portsmouth in one direction and about a third of the way to Bournemouth in the other direction before petering out. Sorting Chichester, Arundel and the back of Worthing/Lancing out would greatly ease my frequent journeys to the AMEX during the season.
Slindon - Amberley - Storrington - Washington - Steyning - Shoreham.