The 2015 CIO Summit, the UK's premier CIO networking, knowledge sharing and career development event, saw well over 100 Chief Information Officers, CTOs and IT directors gather at the Royal Horseguards Hotel in London to see presentations and CIO masterclasses from some of the leading business and technology executives in the UK.

Here's a look back at some of the day's highlights, along with video interviews with CIOs from Domino's Pizza, Genus, The National Trust, Cushman & Wakefield, Natural Resources Wales, and Central and North West London NHS Foundation Trust.