Even after a done deal between Britain and 27 other members of European Union, British exit from EU looks a very real possibility, more so with some of the heavyweights joining the exit camp, such as London mayor Boris Johnson.

Last night two of world's top three rating agencies have warned against the exit as it would likely to cause months of uncertainties and darken the outlook of credit assets.

According to Fitch, British exit from the bloc would have high short term economic cost and long significant long term risks.

Moody's investors' service has warned an exit would be credit negative for British economy.

Previously Goldman Sachs had warned that Pound could drop as much as 20%, if Britons choose the exit route.

While there are debates going on, and there are some contrasting views suggesting Britain would be better off outside the bloc, all are however in agreement that it would spark, months, if not years of uncertainty.

An exit vote would lead to Article 50 negotiation with EU over exit but setting up the agreements such FTA, BTA could take years. TAX confusion would also be immense.

So Pound is right in pricing such risks. Pound is currently trading at 1.412 against Dollar.