McCallum had a huge task on his hands after joining the Met as CIO two years ago: taking charge of digital transformation for a force that is notoriously slow to adopt changes.
Recently McCallum has led the rollout of cloud collaboration service Box, which is expected to save many working hours for officers on the street.
Entrepreneur Sukhi Jutla graduated into the banking industry, but re-trained herself to enter the challenging world of technology
Without a single mention of "having it all." Except that one
Merger will create the largest food delivery company outside of China
Nationwide opens Digital Innovation Centre in London with plan to hire 750 tech specialists to support £1.3bn IT spending boost
Nationwide pushed into opening technology centre in London in a bid to tap the specialists it needs for digital transformation
With more categories and more entries than ever, the 2019 event will be the biggest yet