A Franco-British union as a third centre of power

How would a functioning Franco-British union formed during the Second World War affect the early Cold War?

It could become a powerful European bloc with combined armed forces, a large economy and a more integrated Commonwealth-style network.

The scenario assumes the difficult constitutional work succeeds and France enters as the smaller partner in a durable state. Combined armies, navies and economies would make the union a major actor in the early Cold War. British Commonwealth practice and French economic integration could produce a more formal trade system around former imperial territories. Marshall aid and reconstruction might then anchor a wider European bloc, with Belgium and the Netherlands among the plausible additional participants.