Postal workers at the Royal Mail depot at Mead Street in South Bristol are due to strike on December 10 in a dispute over working conditions.
Royal Mail has issued this response.
We are urging staff based at Mead Street to continue working as normal and to allow the nationally agreed process for resolving issues of concern to continue.
We are disappointed they have decided to take industrial action on a peak day in the run-up to Christmas, which is our busiest period as we deliver customers' Christmas items.
Royal Mail is determined to do all it can to maintain service to customers on December 10 with help from Royal Mail colleagues throughout the south west and the wider country, to deliver letters, cards and parcels.
Customers can ring the Royal Mail's Customer Service helpline on 08457 740 740 or check its website.
More top news
Temperatures will drop down tonight and tomorrow isn't great with the prospect of more cloud, showers and north easterly winds.
Cloud will move in from the east with the odd shower especially over Wiltshire. Tomorrow will mean more cloud with more showers looming.
The Banfields from Winterbourne near Bristol are celebrating becoming multi-millionaires after matching all six numbers in Saturday's draw