The IMF has lowered its GDP growth forecast from 2pc to 1.7pc on "weaker-than-expected activity" The pound has shrugged off the prediction, rising against the euro and dollar in early trading FTSE 100 continues to fall with aviation giants easyJet and IAG struggling again 12:46PM IMF GDP growth forecast downgrade reaction: Brexit talks still the key to growth IMF cuts 2017 UK growth forecast to 1.7% from 2%, the biggest downward revision this year of all major economies. pic.twitter.com/48gEFXGwUo— Jamie McGeever (@ReutersJamie) July 24, 2017 Brexit talks are still the key factor that could weigh on the economy and that has been factored in by the IMF, according to Mihir Kapadia, chief executive at Sun Global Investments. He added: “With the IMF's growth forecast for the UK cut from 2% to 1.7% for the year, this means there is again a focus on the debate about the effect of Brexit on the country's business. While the IMF's downgrade has been based on ‘tepid performance', the ultimate impact of Brexit continues to remain unclear. "The key factor which threatens to derail the economy and significantly reduce market confidence is the potential for either the Brexit talks collapsing or reaching stalemate. At the moment, there appears to be negligible progress on the talks and the IMF certainly would have factored the risk of talks stalling in reducing their economic growth forecast.” Spreadex commentator Connor Campbell said on the IMF's impact on the FTSE 100 today: "The FTSE's losses really stepped up a gear this morning, the index hurt by the pound's own growth. With the IMF's downward revision to the UK's 2017 growth forecasts already weighing on the FTSE, the improvement in sterling's fortunes only served to make the index more miserable this Monday, leading to a 1%-plus