A clean-seas campaign group has rubbished a report that supports Guernsey’s current method of sewage disposal.

But the author of the report, Intertek Metoc, backed its research, claiming accusations made by Surfers Against Sewage were inaccurate.

The environmental management consultancy conducted research into the Belle Greve outfall.

It suggested that the installation of diffuser ports, at a cost of £6m. to £8m., would enable the waters around Guernsey to meet UK standards.

But Surfers Against Sewage campaign director Andy Cummins argued that there were fundamental errors early on in the report.