More than 230 workers on a North Sea platform have been evacuated following a gas leak, its operators said.

The leak was on the Elgin PUQ platform, an oil and gas facility about 150 miles (240 kilometres) off Aberdeen on Scotland's east coast.

Total E and P UK, which operates the platform, said all 238 personnel had been accounted for and no injuries had been reported.

The bulk of the crew were evacuated soon after the leak was discovered, leaving 19 essential personnel on the rig, but they too were later taken to safety.

"A total of 150 non-essential personnel have now been returned to Aberdeen and a further 69 non-essential crew remain safe offshore on neighbouring installations," a statement from the company said.

A surveillance plane was in the area following "reports" of a sheen on the water, the company said.

The cause of the gas leak was being investigated.

The Deepwater Horizon drilling rig in the Gulf of Mexico blew up nearly two years ago, killing 11 crewmen and causing oil to gush into the water triggering the worst environmental disaster in US history.