The meeting has been arranged after the company revealed plans to close its final salary pension scheme to new members and raise contributions from existing staff.

On behalf of 1,200 members in Scottish Power, Prospect negotiator Glen Dobson said: "The proposal comes on top of 450 job losses imposed by management, and our members are very angry indeed at this attempt to grab back the benefits they’ve earned.

"Our branch committee will meet at the weekend to weigh up the most effective action to take."