Back in the day, IT types were among the lower orders of life in the average bank.

What we used to call the techie ‘plumbers in suits’ were called in when you couldn’t get a “c” prompt response; turning the PC off, then back on, was their usual solution.

Now, signs are that the IT people are poised to take over the helm of at least one bank – making the inroads into financial services which they have already won with startup digital banks like Sterling, Monzo and...