Although the Parliamentarian commander Sir William Waller attested to his stubborn defence, Hopton blamed Bampfield for the defeat and it was this version of events that later appeared in Clarendon's "History of the Rebellion". He was exchanged in June 1644 and served with Prince Maurice in the campaign that began with the Siege of Lyme Regis, then culminated in Lostwithiel and Second Newbury. Hopton dismissed him after the failed First Siege of Taunton in November, and Bampfield spent the rest of the war in Oxford, where he became a confidential servant to Charles I.