Hundreds of workers at airports across the UK will strike for 48 hours just before Christmas, it been announced.
It is the latest in a series of strike announcements ahead of the festive period.
Here we outline what industrial action is happening when:
- Airport workers
More than 1,500 check-in staff, baggage handlers and cargo crew at 18 airports will strike on December 23 and 24 in a long-running dispute over pay.
Members of Unite employed by Swissport will walk out at the following airports:
- East Midlands
Unite members voted by 62.5% to reject a 4.65% three year pay deal for 2015-2017, which the union said barely kept pace with inflation.
The staff were also said to be angry that detrimental changes to terms and conditions have been linked to the pay deal.
- British Airways
It was announced on Thursday that thousands of British Airways cabin crew had voted overwhelmingly in favour of strikes in a row over pay, threatening disruption to flights over the Christmas period.
On Friday, the airline said that cabin crew would go on strike on Christmas Day and Boxing Day.
However on Monday, the airline said they plan to run a full service over the two days despite the impending industrial action.
The dispute involves cabin crew who have joined the airline since 2010, with Unite claiming they earn less than other staff.
- Virgin Atlantic
Virgin Atlantic pilots have voted to take industrial action short of a strike in a row over union recognition, and will work "strictly to contract" from December 23.
Their union, the PPU union, said 88% of its members voted in favour on a turnout of 80%.
The action will see a removal of "pilot goodwill", with pilots who are members of the PPU working strictly to their contract.
- Southern Rail
Southern Railway services are at a standstill again this week causing huge problems for commuters and other travellers.
Members of the RMT union are striking on Monday and Tuesday in a long-running dispute over changes to the role of guards, which has led to a series of walkouts this year.
Members of the drivers' union Aslef are banning overtime, so the combination of the two unions' action will cause delays and cancellations to services.
Aslef members are due to strike again from January 9 to 14 while RMT members are taking industrial action from Saturday 31 December to Monday 2 January.
Talks at the conciliation service Acas between the company and Aslef ended without agreement on Thursday.