V. Dodd, Britain's police budgets to lose £700m by 2020, 2017.

, Association of Chief Police Officers: Online Research and Investigation, 2013.

, Association of Chief Police Officers: ACPO Good Practice Guide for Digital Evidence, 2012.

R. S. Pressman, Software Engineering: A Practitioner's Approach. McGraw-Hill Higher Education, 2014.

, Home Office: Open Source Software Options for Government, Cabinet Office, 2012.

, Home Office: All About Open Source-An Introduction to Open Source Software for Government IT, Cabinet Office, 2012.

, UK Government Digital Service: Be open and use open source-GOV

T. Waring and P. Maddocks, Open Source Software implementation in the UK public sector: Evidence from the field and implications for the future, Int. J. Inf. Manag, vol.25, pp.411-428, 2005.

J. Brooke, SUS-A quick and dirty usability scale, Usability Eval. Ind, vol.189, pp.4-7, 1996.

C. Wharton, J. Rieman, C. Lewis, and P. Polson, , 1994.