A planned strike by Home Office staff including immigration officers in a row over jobs and pay has been called off.
Workers at one of the country's biggest train companies are to take industrial action during the Olympics in a row over a bonus payment
The Unite union announced that London's bus-drivers will walk out on the 5th July, a week today.
Firefighters have voted by almost 4-1 in favour of a strike in a row over pensions, said the Fire Brigades Union.
The Rail Maritime and Transport workers union has confirmed that a strike on London Overground services will go ahead this weekend after an agreement was not reached over job cuts.
The RMT claims that 130 guard jobs are at risk over plans to run driver-only services on some trains. They will walk out for 48 hours from 00:01 on Sunday August 25th.
The strike takes place over the weekend of Notting Hill Carnival and is expected to cause widespread disruptions to services, especially on the Richmond and Clapham Junction to Stratford Junction routes.
Transport for London said they were working hard to keep as many services running as possible and there will be alternative Tube, bus and rail services available.
Planned strikes by workers who scan baggage at Stansted airport have been called off after a deal on pay was agreed.
Members of the GMB union were due to take industrial action over the bank holiday weekend but have voted to accept an improved offer, which was made after talks with contractor Mitie under the auspices of the conciliation service Acas.
GMB officer Gary Pearce said: " I am glad that common sense has prevailed and that Mitie has agreed to pay what GMB members have been asking for since October of last year.
"I have given notice to the company that the strike action has now been withdrawn."
More than two dozen fire engines have been taken out of action and stockpiled at a Territorial Army Base in South London. 25 of them were seen today for the first time by ITV News, ready to be deployed across the capital, if the dispute over changes to pensions escalates. Simon Harris reports.
London Fire Brigade has removed 27 fire engines from its stations as part of contingency plans to prepare for a possible firefighters strike.
The force, which has 169 engines, says if there is a strike the 27 engines would be deployed at strategic locations across the capital to provide fire cover.
The engines would be staffed by private security firm Securitas.
The Fire Brigades Union is balloting its members across the country for industrial action in a row with the Government over pensions.
London fire commissioner Ron Dobson said: "This dispute is between the FBU and Government, but as the national strike may involve London we have a legal responsibility to prepare for the possibility of strike action in September.
"This is not a decision I have taken lightly and I am not presuming the ballot will result in a yes vote, but I need to ensure contingency plans are in place, which is why I've arranged for the temporary removal of 27 fire engines."
The dispute is separate from a row in the capital over plans to close 10 stations, reduce the number of fire engines by 14 and cut more than 500 firefighters' jobs.
In the event of a strike in London, the 27 engines would attend a limited number of incidents, including basic firefighting and some rescue work.
London Fire Brigade has announced that 27 fire engines have been temporarily removed from fire stationsacross London to prepare for a possible strike over pensions.
London Fire Commissioner Ron Dobson says "stations will continue to be available to provide a response to emergency incidents."
The Fire Brigades’ Union (FBU) is balloting its members to take national strike action in response to Government reforms to the Firefighters' Pension Scheme and expects a result by the end of August.
Members of the RMT are expected to mount a protest at Whitechapel tube station today against TFL plans to close the ticket office.
They're also protesting against job cuts,and the undermining of safety.
London Underground continues to carry more passengers, more reliably and safely than ever before. As we have always made clear, we remain committed to staffing all stations across the Tube network, with visible assistance for customers where they need it most.
Where we are redeveloping a station we seek to make the best possible use of space, and in some cases this could mean redeveloping a station with increased ticketing technology rather than a replacement ticket office.
– Gareth Powell, Director of Strategy and Service Development for London Underground
Our plans for Whitechapel, which will increase station capacity with the arrival of Crossrail and enable us to improve accessibility by providing another lift in the ticket hall area, were shared with trade unions last year.
We will continue to discuss changes to ticketing technology on the railway and the huge modernisation of the Tube with our staff.
RMT members who work at London Midland will be balloted for strike action in a row over the sacking of a revenue protection officer.
The union says James Crabtree lost his job after a dispute with a passenger who they describe as a "known troublemaker".
Cleaners on the London Underground have launched a 48-hour strike over an Olympic bonus dispute.
Union members say cleaners deserve recognition and reward for their hard work during the Games.
Cleaners on London Underground will go on strike today for 48 hours, in a row over an Olympic bonus payment.
Members of the Rail Maritime and Transport Union who are employed by private contractors will walk out at 5:30am.
They're set to mount picket lines outside tube stations in London - including Stratford, close to the Olympic park.