Newbury, battle of, 1644. Charles I's staggering victory at Lostwithiel in September 1644 enabled him to take the initiative once more. While the parliamentarians regrouped and re-equipped, Charles moved to relieve Banbury, Donnington castle near Newbury, and Basing House. On 27 October he dug in at Newbury to face a superior force under Manchester. The parliamentary army was large enough to permit an enveloping move, but the east-west attack was badly co-ordinated and beaten off. Under cover of darkness, the royalists retreated to Oxford.