Cardiff-3 ST1 was drilled, completed and tested in 2014 and it remained shut-in until November 2016. Tests were conducted in November 2016 and an additional testing was conducted from January to May 2017. This report outlines the stimulation and testing activities for Cardiff-3 ST1 in 2016 and 2017. A total of 1900 mscf of gas and 410 bbls of liquids (condensate/water) were produced from all testing operation. The aim of the testing was to confirm the presence of moveable hydrocarbons in the K3E, determine the K3E reservoir pressure and unload wellbore liquids and establish stabilised flow. Data of the testing can be found in the enclosures to this report.