I apologise, I didnt mean to pretend the arms didnt assist, the 1st world war would have played out differently if they hadn't, but they are profiteerimg rather than assisting. It doesnt require morale to profit off others misery.

Source? Do you need a source for that? Its commonly accepted that when the Germans first arrived, paticularly in Ukraine, they were first seen as liberators, until the people realised the Germans were even worse than Stalin. Better the devil you know lol

And sorry, but the French officially surrendered. The Free French were actually more dangerous in Africa, as I acknowledged further down. The French officially surrendered and half their homeland was occupied for most of the war, that was my point.

In regards to people having a numbers advantage, thats all well and good until the people realise its hard to buy goods and equipment on bravado. In the modern world, you can kill a man from a bunker some thousand miles away. Its an unwinable fight, in which many innocent people will be caught up and killed, be it by overzealous revolutionaries or the careless killings of those with the guns and the cash. The UK has 64 million people, many of which would not support the revolution or would start revolutions of their own.
As for the correct pre requistes, I would argue Britain lacks the pre-requisites you claim. Britain is primarily a service based economy. Now, hows that going to work out when the country collapses into a civil war? And although Britain has a strong industry too in some respects, who will the trade partner be? America? They'll never touch a revolutionary Britain with a barge pole. The EU? They wont want to risk fanning the flames.
Oh, and then Northern Ireland will probably start up its own revolution (The loyalists claim loyalty to the monarch, not parliament, and the nats want out anyway) the die hard SNPers in Scotland would seize the chance and secede.
The new state would be in taters already, with huge chunks dropping off and a DOA economy.
It just wouldnt work. Even if it succeeded (at massive cost of life, and international prestige, likely having unforseen consequences... I cant imagine the majority of the overses territories remaining British in that scenario, and I can't imagine the commonwealth surviving one of its keystone members and its "mother" going through such a disaster, though its possible they'd toss Britain out or suspend it. Likewise, the EU would take another massive blow etc) the surviving state would be in complete shambles. And when its complete shambles, here come the cut backs. I wonder whether Britain would actually end up further to the right as a result, the socialist like policies of the UK couldnt survive economic collapse. I imagine the people would feel cheated, and that kind of atmosphere could potentially result in further instability and rebellion.