Open Banking enables small businesses and private individuals to share the data the big banks already hold on them with other organisations. The idea is that this will foster competition and smaller banks and loan companies will able able to compete and enter the market. You are not required to take any action, and its significance, and the form it takes will change over time. There’s quite a good article on Wired here.
Over 800 UK bank branches closed in 2017. During the last 10 years the number of people regularly banking online has risen from 30% to 63%. Cash machines are slowly disappearing, retailers would now prefer you to pay by card or app, and buses spend less time at bus stops as fewer people are fumbling around with coins.
My first bank, in 1969, was Martins Bank in Lombard Street, underneath the grasshopper (soon bought by Barclays). My employer banked there, and I had to get a bank account as I was now going to be paid monthly, not in cash. They very grudgingly lent me the money to buy my first motorcycle. How times have changed – bank staff no longer have any discretion or autonomy. They can only consult the computer, the same as you can yourself. If you are not already banking online it’s time to make a start.