Don't wait for your Employer to upskill for public cloud they won't!
Don't expect your employer to do upskilling, they don't give a s**t about u - especially in big org (and banks like this one) you are a resource or body that costs money and disposable they would rather get in a new grad. I got made redundant last time round and did it all myself and got my new role in an SME as an AWS expert!
If I was them I would start upskilling with free tier on AWS, Azure and GCP, or go contracting if they are good.
Yes the following are hot - serverless, microservices, ioT, streaming analytics, and maybe data engineering, data science time to start you have the free courses, data sets, and laptops to do it as no one else will do it for you!
Think about it another way - you could work and kiss ass for 40 years for a large IT company and they only need to give u £15K or £525 per year service (after 2 years) when they make you redundant - so what is the point of working for them?? The Government has made it very bad to be an employee recently - £525/year seriously!
"If you were made redundant on or after 6 April 2019, your weekly pay is capped at £525 and the maximum statutory redundancy pay you can get is £15,750"
In memory of by neighbour M. who was recently made redundant from CSC/DXC after working for them for decades, and died a month later - all very sad.
As for me I'm much happier in the startup world!