5. Mayank Prakash

Key points

CIO, Department for Work and Pensions

Winner of the coveted CIO of the year title at the UK IT Industry Awards in 2016, Prakash has been in his current role for just over three years. His previous firms include Morgan Stanley, Avaya and Sage.

He recently described his top four priorities to Computing.

"The first is raising our aspiration to be the best at what we do," he began. "Next is building capability so that we have the best talent. In my profession you're only as good as the talent in your teams. The third one is focusing on business outcomes rather than focusing purely on requirements or outputs. And the last one is delivering."