Absolutely agree Aly but much of this lack of coordination came about through dozens of private business being lumped together into one nationalised morass. You can see the same consquences in the rail network where lots on individual companies were forced together with all sorts of resultant overmanning and duplication.
So basically if the plants at Linwood and Bathgate had remained there would be no problem. Government subsidy could have supported these motor industries, backing up the rest.
Possibly Vlad but unlikely. Both plants were the creation of the Wilson government in the mid 60s with the view of creating jobs in areas of poor employment prospects. Now that might seem a worthwhile project but it overlooked that facts that two brand new plants had to be built at huge expense, populated by workers who had no experience of car building, at sites which were about as far away as possible from both customers and suppliers. It was a classic example of Government mismanagement of the economy and had the money been invested at a site where there was a history of car building (Coventry, Birmingham, Oxford) who knows how the car industry might have developed.
Either way, the writing was on the wall for Ravenscraig I'm afraid.