Transport for London says that around 30 per cent of buses ran during rush hour. The Unite union has a lower estimate at closer to 20 per cent.
More top news
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.
As people across London celebrate Christmas, Micah Community Church share their Christian beliefs of the special day.