With regard to the civil service report, as Britain wished to maintain its Empire at that time, I imagine that the Empire market would naturally be regarded as more important than Europe.
As for the closed steelworks, I'd guess Consett...
I vaguely remember that in about 1980 British Steel was said to be making the biggest losses of any business in the world.
Wikipedia gives a reminder of those times:
' According to Blair (1997), British Steel faced serious problems at the time of its formation, including obsolescent plants; plants operating under capacity and thus at low efficiency; outdated technology; price controls that reduced marketing flexibility; soaring coal and oil costs; lack of capital investment funds; and increasing competition on the world market. By the 1970s, the government adopted a policy of keeping employment artificially high in the declining industry. This especially impacted BSC since it was a major employer in a number of depressed regions.
[4]
One of the arguments aired in favour of nationalisation was that it would enable steel production to be rationalised. This involved concentrating investment on major integrated plants, placed near the coast for ease of access by sea, and closing older, smaller plants, especially those that had been located inland for proximity to coal supplies.
From the mid-1970s the (now loss-making) British Steel, pursued a strategy of concentrating steelmaking in five areas: South Wales,
South Yorkshire,
Scunthorpe,
Teesside and
Scotland. This policy continued following the Conservative victory in the
1979 general election. Other traditional steelmaking areas faced cutbacks. Under the Labour government of
James Callaghan, a review by Lord Beswick had led to the reprieve of the so-called 'Beswick plants', for social reasons, but subsequent governments were obliged under EU rules to withdraw subsidies. Major changes resulted across Europe, including in the UK '
https://en.wikipedia.org/wiki/British_Steel_(1967–1999)