The license work program will test a novel exploration concept which suggests that relatively shallow gas may be entrapped updip from the 4tcf Hewett Gas Field, which is located in the southern North Sea, 25 km from the eastern boundary of the new exploration license.

The 3-year work program is budgeted at about £220,000 ($A550,000).

Commenting on the matter, ROC's chief executive officer, Dr John Doran, said that while the exploration idea is risky it is based on some sound thinking.

"The successful application for this long-shot, low cost and somewhat novel exploration opportunity with big upside potential, is the direct result of some innovative exploration thinking by ROC's UK staff.

"The company expects to reduce its equity in this permit at an appropriate time in the future, consistent with its view that its optimum level of interest in any new exploration venture which it operates is in the 30-60% range," said Doran.

Onshore UK, ROC operates and holds 100% interests in 10 permits and 97.5% interest in a further two permits, all in eastern and north-eastern England. The company also has a 5% net carried interest in one other permit in the same area.