WORKERS who operate lifeline ferries between the Scottish mainland and the Hebrides islands announced plans to strike at the weekend over bosses’ threats to jobs, working conditions and pensions.

A fleet of 29 ferries serves 22 islands off western Scotland, operated by Caledonian Macbrayne (Calac) on behalf of the Scottish government.

The franchise is up for grabs and disgraced firm Serco, which has been embroiled in a series of scandals, is in the running.

The ferry workers’ union RMT wants assurances about jobs, conditions and pensions from Calmac and Serco, but has received none. Staff voted by more than 90 per cent for action.

RMT general secretary Mick Cash said his were “caught in the cross-fire” as the two companies fought for the franchise.

“RMT wants cast-iron assurances and we want them now and we are prepared to engage in meaningful talks around that agenda.”