AFAIK yes and onwards with a mix of 165's & 168's until the Wrexham & Shropshire operation commenced.
Further pre W&S I wonder when the last scheduled loco hauled train to/from Marylebone was?
While 47's and coaches did run on Chiltern services into Marylebone prior to July 1992 my understanding is they were substitutes for a shortage of DMU's rather than formally scheduled.
I know in the 1980's there were numerous steam specials, some to Stratford-upon-Avon.
There may have been other excursions with Marylebone as either the starting point or destination.
Further back there was a daily, or at least weekday, loco hauled train but that went via Greenford to Paddington. All other services calling at Banbury were (re)routed via Oxford.