Big six supplier EDF faces further industrial action following a five-day strike last week unless it returns to the negotiating table.
Around 70 smart meter installers, members of trade union Unite, downed tools across Bexley Heath, Kent, and Canning Town last week in protest at altered working hours and the use of telematics which could affect nearly 500 staff.
A Unite spokesman explained that unless the energy supplier returned to negotiations, they “might pull out other key areas of the business that will have a significant impact”.
A spokesman for the largest union in the country said: “We will try and make contact this week with the employer because we want them to enter into negotiations with us.
“The last we heard they were going ahead with their plans so our view is that we should go back to ACAS and we may have to strike again.”
An EDF spokesman said: “We… reiterate that we have been in ongoing talks with Unite and we remain open, as always, to meeting employee representatives.”