Stena Line has announced measures to deal with a potential increase in ferry passenger numbers if the ash cloud resulting from a volcanic eruption in Iceland leads to further air travel disruption.
The cloud, which was created by the eruption of the Grimsvotn volcano, led to the cancellation of a number of flights at Scottish airports earlier this week and also affected services in Europe.
It follows a similar event just over a year ago, which led to widespread airport closures and cancellations spanning nearly a week.

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