Sailing, Surfing and other things waterbased

Not a prayer I'm afraid. From the Solent it's approx 2000nm and that's the shortest route. 400nm days are beyond a Swan 45 unless you've got absolutely exceptional weather. In all likelihood you'd be on the wind until you're out of the Western Approaches anyway which is never the quickest!

If time is of the essence why not charter a boat down that way?

we would be heading to Cannes Lions film festival week.. ideal arrival day would be tuesday.. depart sunday.. so worse case scenario from solent in days ??