While BACS' 24h clearing of interbank transfers was normally ok, FasterPayments really makes having multiple accounts split across bank's super convenient.
My wife and I both have our own accounts with Barclays and joint accounts (and mortgage) with Nationwide, and I have a Monzo account for small day to day expenses. It takes me less than a minute to open the Barclays app, transfer some money to the joint account, and then open the Nationwide app to confirm the balance and do whatever I needed to do from there. Total money management game changer. I've done a four hop transfer from my savings to overpay the mortgage, in about three minutes.
My wife and I both have our own accounts with Barclays and joint accounts (and mortgage) with Nationwide, and I have a Monzo account for small day to day expenses. It takes me less than a minute to open the Barclays app, transfer some money to the joint account, and then open the Nationwide app to confirm the balance and do whatever I needed to do from there. Total money management game changer. I've done a four hop transfer from my savings to overpay the mortgage, in about three minutes.