Anderman said:
AFAIK the british Railways wer nationalized in 1946 and not privatised until the 1980s so more then enough time to prove that the state could do it better then the private sector didn´t he......
For the car industry British Leyland or British Elend (misery) as we say in Germany was nationalized in 1975 but not BAe or BMW could make a profit with it .
The difference in the aviation industry between France and the UK is that France wanted a jet fighter (Mirage III) and the UK not (Duncan Sandys and his White Paper)
France wanted an independend nuclear deterence so it has a nuclear industry to produce the fissile material and the SLBM it neesds. The UK buys american ...
Back in 1986-87, when I lived in England, everyone was complaining about the state-owned railway system: old, inadequate, never on time... and the announcement of privatization was seen by most everyone as a blessing. However time proved them wrong. The investments needed to overhaul the entire railway network — trains of course, but especially rails and control terminals, not to mention prospective investment on modernizing the whole thing — would have been so costly that no-one, state or private investors, was really willing to take it up because there would have been no return on the investment. People will travel no matter what the condition of the network. But if you invest such amounts you need to increase the fares, and that can be done only up to a certain point.
The argument that Britain buys American and not France is only partly true. We did buy American material at times when we had no means to develop our own, but the goal was always to remain sufficiently independent to not depend on the American big brother (De Gaulle's thinking was especially indicative of that). I think both Britain and France have had an ongoing love/hate relationship with America but manifesting itself in quite different aspects.
I believe (and that's really only my personal analysis) that the only real difference between France and Britain is that in the aftermath of WW2, France understood that it no longer had a leading industrial role and that it needed to modernize. The French are stubborn and resist change, so things evolved at a slow pace but the various governments never stopped improving the rail network, the motorways, the airports. On the other hand, it took too long to Britain to realize the loss of her preemince. It continued to exist on the premices that it was the leading industrial power and failed to adjust to rapidly changing times. The resistance to "Europe" (almost a swear word for many Britons back then), the persistence of coal and steel well into the 1970s and early 1980s when other countries had begun to dismantle them are further examples of that difficulty in adjusting to a more global kind of thinking.
Although it's fair to say that aviation was a strong (maybe the strongest) asset and really would have deserved a better outcome, car design for instance kept being thought for Britons only and outdated by international standards. Only in the higher end segments of the market did they still have an edge (Jaguar, Aston Martin, Rolls-Royce) but that wasn't sufficient to keep the jobs and the factories open. To answer the question asked in the topic's title, perhaps if the French and British car, rail (and others) industries had come together to work on common projects like BAC and Aerospatiale did, the outcome wouldn't have been the same. The satisfactory creation of goods and services in common might have reinforced the European feeling and prevented (or at least delayed) the current situation.
Of course I'm willing to read adverse opinions to prove me wrong! As I said it's only my personal perception of two countries which I know and appreciate each in its own ways.