The U.K. economy’s sweet spot is about to be challenged. Prime Minister Theresa May kickstarted the formal withdrawal from the European Union on Wednesday, leaving businesses and investors facing the realities of Brexit and changes to everything from regulation to the movement of workers and goods. There’s also a lack of clarity over whether a good deal -- or any deal -- can be reached. Bank of England Deputy Governor Ben Broadbent said last week the economy was in a post-referendum, pre-Brexit “sweet spot” for exports. That situation, where the pound has fallen but trading rules are as yet unchanged, may not last, ... (full story)