Incidentally, whatever people might think about him in later years, it's clear that Sharkey and 801 Sqn were far more knowledgeable about the use of Blue Fox and the associated tactics than were their 800 Sqn colleagues...
Someone will know the full answer, but might this be due to a dearth of Blue Fox at the time? It was still in its development phase and 6 of the 8 B Models (B3-B8) were deployed, along with a few very early productions models. B1 and B2 were completely incompatible with the rest and each other, being little more than A Models. As with Lynx (Sea Spray) and Sea King (Sea Searcher) the development was shut down with about a year to go and production launched. On BF, the "Jamming Package" of mods was initiated almost immediately and embodied by 1984. This was an interesting procurement dilemma, as the RN's 3 front line radars were all in development at the same time, all needed an extensive CDS package to finish the work, but the BCs forced the final year's development to be spread over the next 8 years.
As an aside, B3-B8 had an astonishing reliability record, and the next time Ferranti saw most of the LRUs was when returned for the ILIC/Anderwave BF Mk2 upgrade in the late 80s/early 90s. The dog's bollo*ks of a radar, and the best radar company we ever had.