Members of Oil & Gas UK - the body representing the offshore oil and gas industry - held a "period of silent reflection" today to remember the four victims of a helicopter incident in the North Sea last week.
The group's chief executive Malcolm Webb said the grounding of the Super Puma helicopter fleet would cause "considerable inconvenience to the workforce and their families".
He said it could result in delays and flight backlogs as well as "potential adverse effects on offshore activities".
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Police say that anyone who sees Whitehouse should not approach him, but instead call them on 999 and quote incident 23 of 18 February.
A cloudy day for most, with mist and murk, along with some outbreaks of rain, slowly spreading across western parts of the UK.
Wet weather to end the weekend.