Royal Mail has halted Britain's first planned national walkout by postal workers since it was privatised, after successfully applying for a high court injunction. The last mass industrial action among postal workers was in 2009.
The CWU maintains it has been attempting to find a solution to the dispute for 18 months.
It claims that an injunction is appropriate to prevent the deliberate inconveniencing of hundreds of thousands of people across the United Kingdom, as well as commercial loss to the company.
The disagreement centres on the closure of Royal Mail's final salary pension scheme to new entrants, the terms of a replacement scheme, and also rows over pay and delivery office closures.
"We want an agreement and will comply with the injunction to undertake further external mediation".
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The postal services company said the United Kingdom higher court has ruled that contractual dispute resolution procedures under the Agenda for Growth must be followed before industrial action can take place.
The CWU says its gripes with the company are all linked to the controversial privatisation - accusing bosses of cost cutting and asset stripping to satisfy shareholders.
On his way into the court, Ward said: "Court rooms don't solve disputes". Instead, the company's actions will have the complete opposite effect.
Members of the CWU voted overwhelmingly in favour of strikes last week. "But sooner rather than later Royal Mail Group will have to confront the harsh reality that they are completely out of touch with the views of its workforce", CWU General Secretary Dave Ward said.