An Ayrshire pharmaceutical firm is facing months of industrial action after workers went on strike this morning.
Around 40 members of staff at the GSK plant in Irvine have downed tools in a dispute over bonus payments.
Electricians, scaffolders, cable pullers and labourers - all members of Unite, Scotland's largest Union - started strike action at 7.30am today which is planned to continue each day up to January 23.