Just spotted a good summary of the Open Banking Standard -
http://blog.thisisbud.com/open-banking-in-3minutes/
It includes this prediction -
Research from some sources suggests that Open Banking will be very attractive to consumers. A survey by PwC suggests that banks could lose up to 24% of their business, a whopping £8.5bn in new revenue streams.
At least some of that must be going to the challenger banks, right? 