Workers have resumed strike action at an Ayrshire pharmaceutical firm in a row over bonus payments - and union chiefs admit the dispute could drag on.
Around 40 members of staff in engineering construction roles - all members of Unite, Scotland's largest union - downed tools at the Irvine GSK plant this morning.
The strike is expected to last a full week and follows a previous round of strike action that took place from January 9 to January 23.
