The International Monetary Fund has defended the grim warnings it made about the potential impact of the UK voting to leave the EU, with its chief economist saying it would have been “malpractice” not to have considered worst-case scenarios. The comments came after the fund nudged up its 2016 growth forecast for the UK but cut the 2017 forecast once again. Jeremy Cook, Chief Economist at World First, joined Share Radio to offer his view on the forecasts.