Docklands Light Railway workers are to be balloted over strike action due to disputes over pay and conditions. Members of the Rail, Maritime and Transport union will vote in the coming weeks, with a result expected on May 12.
There are two separate disputes involving this year's pay deal for directly employed staff and another row over wages for employees at the facilities company Interserve.
RMT general secretary Mick Cash said: "Our reps are in no doubt that we need to send a clear message to management that staff are prepared to fight to demand decent rewards and recognition, a safe working environment, decent working conditions and will not be forced into accepting inferior pay arrangements."
Michael Roberts, director general of the Rail Delivery Group representing rail operators and Network Rail, has said:
At 2.2%, the average increase in fares in 2015 is the lowest for five years. We understand no one likes to pay more, especially to go to work.
For every £1 spent on fares, 97p goes on track, train, staff and other costs while 3p goes in profits earned by train companies for running services on Europe's fastest growing railway.
We are very sorry that many passengers experienced a service well short of what they deserved last weekend. To ensure we build a better railway, Network Rail is spending £38 billion over five years alongside commitments made by train companies.
This will deliver more seats, better stations and improved journeys for passengers.
TUC general secretary Frances O'Grady said:
This year's fare hike will hit passengers particularly hard because wages are rising so slowly.
Rail fares are now consuming a huge proportion of people's wages, leaving precious little for other bread and butter expenses.
On average passengers are now paying £600 more for a season ticket and yet seeing no change in their pay packets.
RMT general secretary Mick Cash said:
The scandal of Britain's great rail fares rip off continues with today's hike far outstripping average pay increases, and it will once again hit those at the sharp end of the austerity clampdown the hardest.
Rail passengers will be hit as the price of train tickets rise by an average of 2.2%.
Regulated fares, which include season tickets, are going up by 2.5% while the average increase for all fares is 2.2%.
The rail industry said the increase is the lowest since 2010 but campaigners and trade unions argue the increases are continuing to outstrip the average rise in wages.
The Campaign for Better Transport said the cost of a Milton Keynes to London season ticket had risen by 23.5% - or £930 - since January 2010. The price of a 2015 ticket is £4,888.
The rises comes after weeks of disruption to rush-hour services. Over-running engineering work led to chaos last Saturday, with King's Cross, Finsbury Park and Paddington stations having to be closed and resulted in Network Rail chief executive Mark Carne announcing he would not be taking his annual performance-related bonus.
Mick Cash has been elected general secretary of the Rail, Maritime and Transport union to succeed Bob Crow, who died earlier this year, the union announced.
The RMT has announced a fresh wave of industrial action ahead of a decision today on who will replace the late Bob Crow as the union's General Secretary.
The action comes as part of a long running row over ticket office closures. The RMT is accusing London Underground of being "hell-bent" on carrying out a programme of ticket office closures and job cuts despite months of talks.
Plans for an overtime ban and other forms of industrial action were suspended earlier this month, but members will now ban overtime from Wednesday until further notice.
Voting to decide who will replace Bob Crow as General Secretary of the RMT (Rail, Maritime and Transporters Union) Union ends today.
Mr Crow, who was from Shadwell in East London, died earlier this year. During his time leading the union managed to increased membership by 20 thousand.
Five people are running for the post, including Acting General Secretary Mick Cash.
The RMT and other transport workers' unions will hold a demonstration at Blackfriars Station protesting the newly merged Thameslink, Southern and Great Northern franchise. They say the contract, awarded to Govia Thameslink, will see cuts to station staff numbers and ticket office closures.
Transport union the RMT is gathering its members together in central London as part of its campaign to halt cuts to Tube services.
The plans outlined by Mayor Boris Johnson include cutting the number of station staff, closing ticket offices, and introducing driverless trains.
The RMT says the austerity measures will not only mean job losses, but impact on safety and services.
The event aims to inform trade union members as well as the public about the issues and to discuss the next campaigning steps.
A planned tube strike by power workers on London Underground has been called off. Union members were due to walk out over the Bank Holiday weekend in a row over pay and conditions which could of disrupted services.