In the last period, 2015 Q4, the largest presented item is O2 - UK | Mobile services | Contract with Total Subscribers of 14.4M. The fastest growing participant in our report is O2 - UK | Mobile services | Contract with 18.97% growth in Total Subscribers over 12 quarters between 2013 Q1 to 2015 Q4. The topic that suffers from the biggest downturn is O2 - UK | Mobile services | Prepay with 1.83% decline over the same period. This report is based on data published by Telefonica