The current (2007) Arriva Southend fleet includes 16 low floor P and T Darts, all Plaxton bodied. Peter had 3396, P266FPK, on a duty on service 9, seen here at Shoebury East Beach.
3396 is one of the few that still carry Arriva's rather understated route branding.

Photo from the Peter Cackett collection, photographer Peter Cackett, taken Shoeburyness, East Beach