Speaking history for John Barradell

Open-data Cities Conference

England England, Brighton

20th April 2012

• John Barradell

The Guardian Public Service Summit Scotland

Scotland Scotland, Edinburgh

22nd September 2011

Guardian Public Services Summit 2011

England England, St. Albans

10th–11th February 2011

Socitm 2010

England England, Brighton

10th–12th October 2010