Brexit effects may reflect in business surveys

By Catherine EvansLONDON (Reuters) - In the week after Britain formally notified the European Union of its intention to quit the bloc, business surveys will give more idea of what -- if any -- impact Brexit is having on the British economy and how its EU peers compare.Last month's purchasing managers' index (PMI) reports suggested unexpectedly strong growth in Britain's economy sinceJune's Brexit vote may be starting to flag as inflation picks up, partly as a result of the pound's post-referendu