Leeds staged a late rally and looked to have pinched a win when Iestyn Harris and Blackmore worked the ball wide for right winger Karl Pratt to cross at the corner and Harris' superb touchline goal - his third from four attempts - edged the visitors back in front.
Richardson should have broken the deadlock as England looked to up the tempo, but he missed a gilt-edged chance at the back post as Nugent flicked on James Milner's cross.
Auckland broke the deadlock on the stroke of half-time when Jason Hayne burst down the right and delivered a superb cross, which Dickinson, who had edged in front of his marker, cushioned home.