England virtually assured themselves a play-off to reach the 2009 European Championships with a patient victory. The hosts broke the Republic's spirited resistance on the hour mark when Stephen O'Halloran deflected James Milner's low cross into his own net.
Andy Keogh wasted three decent close-range chances for the visitors.
And as Ireland tired, the excellent Milner drilled in a low drive from 25 yards, while Theo Walcott sealed the win with a delightful clipped finish.
Stuart Pearce's side now need only a point from their final group game against Portugal to claim top spot and guarantee a play-off place.