As stated earlier, a BAC1-11 had a row of seats facing backwards and therefore facing a front facing set of seats by the overwing emergency exit. I always use to try and get these for the extra leg room.
I flew on a British Eagle Britannia from Heathrow to Basel in 1963 and all the seats faced rearwards as they had a trooping contract and MOD (or whatever they were called in those days) insisted upon it.