Brexit "leave" vote to spark UK recession, economist warns

The polls might be tipping a tight outcome in the Brexit referendum, but behind the scenes experts have been war-gaming the potential impact of a possible "leave" vote.

Research by the London School of Economics in "Life After Brexit" is warning Britain would most likely fall into recession if it leaves the European Union as a myriad of agreements unravel over several years.

The report's co-author Professor Swati Dhingra is the latest to agree with warnings from the British Treasury that a "leave" vote would be a shock to the UK economy and rattle global financial markets.

Professor Dhingra speaks with the ABC's Peter Ryan