I forget the name of the manufacturer of the BA TriStar Autoland system. Suffice to say that it was regarded as PFM!
I recall, many years ago, the thirty-or-so approaches we made into Bedford to (re)evaluate the RAF TriStar Autoland System. Quite why we had to attempt to reinvent the wheel I'll never understand. However, not unlike the Belfast, the scatter was minimal and that there were concerns about the pavement strength of Brize Norton and whether or not it was financially viable to allow Autoland to be routinely used.
In the end I believe that it was a "certification" issue that resulted in the RAF TriStar's not to be cleared for Autoland use.
Before any of the expected comments appear with regard to the damaged aircraft that did attempt an Autoland at Brize... that particular attempt was made by a pilot who hadn't been trained in the use of Autoland and that he attempted Glideslope Capture within the region of 500 ft or so... destined to failure! And a very expensive fix!
TCF