Brian:
I was looking for this some time ago. The National Archives at Kew hold a copy, but on requesting to see it, I was told it's not available to the public, under provisions of the Freedom of Information Act.
From memory, the reason given was that the report attributes blame so that's why it is restricted. The communication I had also described it as "the CAA report" into the incident.
I've just had a quick look at
www.nationalarchives.gov.uk and it seems there's a trial download facility - but you have to pay, and it specifies a number of pages - no good if you don't know how many pages there are.