Royal Mail's entire London-based workforce went on strike Wednesday, as management and representatives continue talks over pay and conditions to avert a nationwide walk-out, a key postal workers union claimed, according to Times of London.

In the 16th successive week of one-day strikes, the Communication Workers Union (CWU) said 100 percent of Royal Mail's staff in the capital took part in the walk-out.

Royal Mail has brought in extra managers to help deliver essential mail such as registered deliveries, but the union said that there was no way it could replace all 12,000 workers.

A Royal Mail spokeswoman confirmed that the London strike had taken place but said that it had nothing further to add to yesterday's statement that the union's "peace offer", made yesterday, had raised "a series of fresh demands", according to Times of London.

The CWU's offer contained a promise to "reach a three-year agreement" alongside a demand for stronger job security guarantees and an improved benefits package for postal workers, plus a guarantee that staffing levels would not be affected by budget deficits.

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