Complex sentence: It was annexed by the Clifton Cinemas circuit on 25 August 1944, and the Northampton Repertory Company were based there between 1949 and 1951; it was described as the Northampton Repertory Theatre's outpost.
Split into simpler sentences: It was annexed by the Clifton Cinemas circuit on 25 August 1944, and the Northampton Repertory Company were based there between 1949 and 1951. During this time, it was described as the Northampton Repertory Theatre's outpost.