Brexit fears to rattle markets this week; I go to lunch and find "uncertainty" on menu

Nerves are running high on global financial markets with this week's vote on whether Britain should stay in the European Union only days away.

Polls on the Brexit referendum are now pointing to a lineball outcome when the poll is declared on Friday afternoon Australian time.

But in an already edgy world of slow growth, financial institutions and fund managers are working overtime to brief investors on their potential exposure to Britain leaving the EU.

The ABC's Peter Ryan goes to lunch and finds plenty of uncertainty on the menu.