 The parish was served by the clergy of St Mary's Church, Warrington until it became an independent parish on 24 July 1929.The last Benedictine Parish Priest was Fr Harold Cyprian Broomfield O.S.B as the Abbot of Ampleforth Abbey surrendered the parish to the Archbishop of Liverpool on 10 September 1962
From 2013, following the death of Canon William Redmond, the parish was served by the parish priest of St Benedict's Church, Warrington.On 1st May 2018, St.Oswald's became part of one new combined parish called Blessed James Bell which also incorporates the former parishes of St Mary's and St Benedict's in Warrington.