Yes, the Belfast was equipped with the Smiths System Autopilot (as was the Trident I think?) and was autoland capable. Was it called Cat3 back in the 1960's?
I was told that it was so good, that the touchdown zone on the runway used for trials (perhaps Fairford?) developed a dent from the aircraft touching down consistently in the same spot.
It couldn't be used in civilian service as one of the pitch channels was used for the stick-push system that the CAA insisted upon for civil certification.
DH