London commuters and tourists visiting the capital face transport misery as 27,000 bus workers plan to go on strike.
The action, from members of trade union Unite, will last for 24-hours and start at 4am on 13 January.
The union members said the strike is over "unfair" pay disparities between bus workers.
Unite claimed a "refusal" by the bus operators to address the issue has led to pay gaps of over £3 an hour for new starters opening up, with pay varying from £9.30 to £12.34 an hour depending on the company.
In this video explainer, IBTimes UK senior political reporter Ian Silvera explains why bus workers are taking industrial action, as well as the best tips to avoid travel chaos in London whilst the strike takes place.