How’s this for a “plot”? Lets start in about 1981 and come up to the present day.
The government backed and funded National Enterprise Board (N.E.B.) owns 95% of British Leyland (BL), so to all intents and purposes BL is a nationalised concern. Rolls Royce (RR) had failed and been bailed out by the government (i.e. nationalised). ■■■■■■■ Engines U.K. had been established with the help of government foundation grants and built production facilities in unemployment black spots of Shotts and Darlington. (A foundation grant is a sum of money that is not repaid by the recipient of the grant). So by the time of the launch of the T45 Roadtrain range the government is saddled with BL and RR, and it has a vested interest in supporting ■■■■■■■ Engines UK, (which it still does to this day with a £4.9 million grant as recently as 2014).
So, after two years of production of the T45, the TL12 engined tractor unit models are outselling the ■■■■■■■ and RR powered versions. (Fact) Why? Because of something called brand loyalty from former AEC and Leyland operators who actually thought that the TL12 was a bloody good engine for fleet operations, the best selling sector both then and today. But this wasn’t in the script of the “plotters”, so the “plotters” concoct the story that it’s cheaper to buy in RR and ■■■■■■■ engines and stop production of the TL12. So immediately the large fleet operators, formerly big purchasers of Leylands and AECs, start to vote with their cheque books and look at Volvo, Scania, DAF, and others. Again, this wasn’t foreseen by the “plotters”, ■■■■■■■ engine operators preferred to buy ERFs and Seddon Atkinsons, again that strange thing called brand loyalty that customers have. So BL fails as a business, DAF gets the assets, including a modern assembly facility, but in due course DAF struggles to make a success of its UK operations despite topping the sales charts in total numbers of vehicles sold annually. But wait, Paccar of the USA has dipped its toe into the UK market with the purchase of Foden in 1980, so it grabs the opportunity to buy the struggling DAF company both here and in The Netherlands. Over the years by investment and sound management DAF is transformed into a very successful European commercial vehicle manufacturing giant and it is habitually the best selling marque in the UK. Remember it is US owned, and oh, by the way, it buys hundreds of ■■■■■■■ engines every month, used in the DAF 45, Europe’s best selling 7.5 to 12.5 tonnes gvw truck.
Looking at the above, then the “plotters” achieved their aims as suggested by Carryfast, not particularly in the way they or CF imagined, but it is the fact of the matter. Or am I being as daft as CF. (Don’t answer that one please. 
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