In 1999 ROC purchased a suite of oil and gas assets onshore eastern England and offshore in the UK North Sea.
The core asset acquired was the undeveloped Saltfleetby Gas Field in Lincolnshire, which ROC developed into Britain’s largest onshore gas field. In December 2004, after producing 54 BCF of gas, the Saltfleetby Gas Field was sold for a cash consideration of A$108.5 million (A$72 million net after tax profit).
From 2004 to March 2009 ROC's remaining onshore UK licences were relinquished or sold. ROC currently holds non-operated interests in the UK North Sea.
ROC’s UK North Sea portfolio includes two producing fields, the Blane Oil Field and the Enoch Oil and Gas Field.
