BEA Trident
Considerably. The Trident and the VC10 were the first airliners to be fitted with Autoland in collaboration with BLEU. The Trident was the first one to do an automatic landing, in 1965, and was certified to use it for CAT II conditions in 1968, a few months earlier than the certification of the Caravelle for CAT III. The Trident was certified for CAT IIIA and B in 1972 and 1975.
There is a full account about the Trident (up to 1970) in:
K. J. Wilkinson (1970) Automatic Landing in BEA’s Trident Operations - a Review of Effort and achievement, The Aeronautical Journal, March 1970, Vol. 74, Number 711, pp. 187 - 196
but I don't know if that is available in cyberspace.
Roy Easson