How then was the Admiralty to find a fleet for Singapore, as had been repeatedly promised (though with waning conviction) to Australia and New Zealan… - Correlli Barnett

A navy is no more than the armour and the weapons-system of seapower. The hull, providing essential buoyancy, is the national wealth. The propulsion is commercial and industrial success, which creates the national wealth. By the end of the Second German War in May 1945 British national wealth, once the greatest in the world, had given way to bankruptcy, with overseas debts exceeding reserves of gold and foreign currency by nearly fifteen times. Whereas in 1870 Britain's foreign trade had nearly equalled that of France, Germany and the United States put together, in 1945 her export trade had collapsed to less than one-third of the 1939 level, and her visible exports could finance no more than one-tenth of her overseas requirements. Worse still, the British industrial machine, once the envied model for the rest of the world, had been revealed by the war to the government, though not to the British people at large, as out-of-date in equipment, methods and attitudes; crippled by poor management and obstructive workforces; and weak in advanced technologies. All this was especially true of shipbuilding.

Britain in particular was again paying the penalty for a hundred years of Free Trade policy. This had rendered her dependent on enormous quantities of imported foodstuffs (to the ruin of British agriculture, only now being once more resuscitated in wartime by emergency measures). Free Trade had also reduced her general economic and industrial self-sufficiency by exposing her home market to massive imports of foreign technology, all of it paid for in peacetime by British exports (now reduced to only a third of the peacetime figure) or by income from foreign investments (now all liquidated). In the Victorian era this national dependence on a high volume of seaborne imports and exports had seemed the formula for unexampled prosperity. Now, in the crisis of a world war, it constituted, as in 1914–18, a strategic vulnerability that menaced the country's very survival.

Noble though the wartime aspirations of the liberal Establishment might be, New Jerusalem nevertheless constituted – just like the postwar illusion of Britain as a present and future world and Commonwealth power, or the pre-war faith in the League of Nations as a preserver of world law and order – a piece of romantic fantasising, rather like some gigantic palace in an engraving by Piranesi. And just as Piranse's imagination defied the laws of physics and geometry, so did the dreamers of New Jerusalem disregard the real-life problem of funding its construction out of what was now a bankrupt and backward industrial economy instead of the richest in the world that it had been in their youth.