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 man hours for officers on the street.
Office 365 is popular, but experts agree that even the top tier should be bolstered by third party systems
Anne Sheehan, Enterprise Director, Vodafone UK, explains how to support more girls pursuing an education and a career in STEM subjects
Atos and Google will help global enterprises utilise emerging technology
A large majority of businesses is still unprepared for GDPR, says study