Strike action has been announced on the London Underground during the Queen’s Platinum Jubilee weekend, with staff walking out of two key stations.
Tube staff in the RMT Union have voted to walk out at Euston and Green Park stations on Friday June 3, amid claims of a toxic work environment created by a "bullying manager".
Green Park is one of the closest stations to Buckingham Palace, while Euston will serve people coming to London for the long weekend from Manchester, Cumbria and Glasgow.
June 2 and June 3 are both bank holidays as Brits celebrate Queen Elizabeth II becoming the longest serving monarch.
Thousands of visitors are expected to come to the capital that weekend, with events all across London for the Platinum Jubilee.
The strikes will last the entire day and the union said it will affect Victoria, Jubilee and Piccadilly line services at both stations.
National Rail services at Euston will not be affected.
Transport for London said train services would not be affected, however the stations would be and the impact was under review.
RMT general secretary Mick Lynch said: "Staff at Euston and Green Park Tube have suffered years of sustained bullying and intimidation by a manager who has created a toxic working environment.
"The union has tried in vain to reason with management, but they now will not let local representatives be part of a review into dismissals at the stations, instigated by the manager in question.
"Our strike on June 3 will cause significant disruption to people wishing to celebrate the Queen’s Jubilee.
“However, if Tube bosses do the right thing, and deal appropriately with the manager in question, we can find a just resolution to this dispute."
TfL is understood to be carrying out an investigation into the bullying allegations and have asked the RMT to call off the strikes as a matter of urgency.
A TfL spokesperson said: “We hold our people to high standards and ensure everyone is treated fairly.
“We’re aware of this dispute and are carrying out an urgent review in a bid to resolve it.
“We have had a number of meetings with the RMT and are urging them not to take strike action and to continue working with us to find a resolution.”