Tube strikes are poised to unleash chaos over the busy Queen's Platinum Jubilee weekend.
Underground workers at two Tube stations are to strike on one of the Jubilee bank holidays in a row over bullying.
Members of the Rail, Maritime and Transport union at Euston and Green Park will walk out on June 3 unless their complaints about bullying are addressed.
The bank holiday weekend is expected be the most crowded and the busiest London's underground system has experienced in recent years.
Events are expected over the four-day celebration whiich had its busiest day last Thursday when 2.97million journeys made that day alone.
RMT general secretary Mick Lynch said: "Staff at Euston and Green Park 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."
A Transport for London 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."
MyLondon reports Tube workers in the RMT union have voted to walk out at Green Park and Euston stations unless Transport for London (TfL) agrees to an internal investigation over the allegations brought by staff.
The strike action will mean that trains on the Northern and Victoria lines may have to skip Euston station all day and Jubilee, Piccadilly and Victoria line trains skip Green Park.
It will not affect Overground or National Rail services at Euston, although it will significantly increase journey times as passengers will have to use surrounding stations or buses.
There are overnight strikes on the Central and Victoria lines every Friday and Saturday until Sunday 19 June 2022.
There will also be overnight strikes on the Jubilee line every Friday and Saturday from Saturday 21 May - when Night Tube re-opens - until Sunday 19 June.
A resolution to the strike will be sought if demands by unions are met.
