The first event of the D5 was held in London on 9 and 10 December 2014 with delegates from the five founding nations attending, as well as the United States, who were there as observers; the event was hosted by the UK's Cabinet Office minister Francis Maude
https:// en.wikipedia.org/wiki/Digital_5
D5 can have multiple meanings, & seeing the players involved in this i think its worth noting….