Posties in the region are to be balloted over more strikes.
The previous mandate for industrial action which saw members of the Communications Workers Union (CWU) walk out for 18 days in the second half of 2022, expired this week.
In a national briefing general secretary Dave Ward said talks were ongoing but both sides were “nowhere near” reaching an agreement.
He said: “You’ve faced the most brutal attack on any group of workers since the 1984/85 Miners’ Strike. Every day, management have tried to intimidate and bully, but you’ve stood solid and it’s a tribute to you all.
“At the same time, the union is launching a national campaign to win the new strike ballot mandate as required by law.
“Under current legislation, last year’s two national Royal Mail ballots expire on January 19 (over pay) and February 17 (over changes in conditions) respectively.
“The union is, therefore, holding another national strike ballot, which will encompass all of the issues in dispute.
“Ballot papers will be dispatched to members on Monday, January 23, and the result will be declared on Thursday, February 16.
“We’ve got to win the re-ballot and return another massive yes – and to achieve another huge turnout.”
A Royal Mail statement said: “We welcome the CWU’s agreement to recommence facilitated talks through Acas.
“Royal Mail is committed to reaching an agreement to resolve the current pay and change disputes to secure the company’s future and its employees’ long-term job security. The talks will run through to Friday, January 20.”