24/06/2016 11:04 PM AEST | Updated 15/07/2016 12:54 PM AEST

Commonwealth Bank Temporarily Suspends Foreign Exchange Of GPB Pounds In Brexit Wake

And they didn't warn their customers about it.

David Gray / Reuters
The Brexit campaign saw the British pound slump to its lowest level in 31 years.

In the wake of the Brexit polling results -- that saw the British pound slump to its lowest level in 31 years -- Commonwealth Bank temporarily suspended all foreign exchange of the British pound, leaving many Australians overseas without cash.

The major Australian bank confirmed the freeze on Twitter on Friday night that would extend to the foreign exchange of GPB pounds and any other exchanges that do not involve Australian dollars until Monday.

It later made a statement after normal services resumed.

"The temporary suspension to retail foreign exchange transactions this evening was lifted as of midnight Sydney time [on Friday, June 24, 2016]," the bank said.

"All retail foreign exchange channels including international money transfers, travel money card and foreign currency accounts are operating as normal. We thank our customers for their patience."

Earlier, hoards of customers took to social media to express their anger and frustration over the move that has impacted both those using travel cards and those making overseas transfers.

Many have been left stranded in foreign countries.

And the major bank has remained quiet.

There are early reports on Twitter that the freeze is also impacting National Australia Bank customers.

The bank later released a statement confirming foreign exchange was available for all currencies.