NatWest customers across the UK have been left unable to access their accounts this morning as the bank’s mobile app experiences widespread technical issues. Hundreds of users are currently reporting problems with the banking app, which is preventing them from logging in to their accounts and accessing their money. The outage, which began within the last hour, is affecting the high street bank’s mobile and online banking services, leaving customers locked out of their accounts. According to outage tracking website DownDetector, thousands of customers have reported issues with NatWest’s service…