London bus drivers have gone ahead with a 24-hour strike, as part of a campaign over pay and conditions.
The stoppage was organised by members of the Unite union across 18 bus companies. Only 44 out of 673 bus routes are expected to be operating today (13 January), leaving millions of commuters struggling to get to work.
Services were affected from 4am, with buses operating on Wednesday morning also likely to be disrupted.
Transport for London has warned that journeys were likely to be "significantly disrupted" as only 30% of buses were running this morning.
Unite has said there is no collective pay deal between drivers, meaning that there are 80 different pay rates for drivers doing the same job as wages were negotiated depending on the company. The union said hourly rates can vary by more than £3.
TfL said less than 16% of the bus drivers in London voted in favour of industrial action. A survey of 1,600 bus passengers for Unite showed two-thirds backed the campaign.
The services affected include: Abellio London, Abellio West London, Arrive North, Arriva South, CT Plus, Go Ahead, London Sovereign, London United, Metroline, Metroline West, Stagecoach, East London Bus & Coach Company, Selkent and Tower Transit.
You can follow @TflBusAlerts on Twitter for updates throughout the day. Bus passes and tickets will be accepted on the Underground, DLR and Overground on Tuesday due to the strike.
How long does it take to walk between tube stations?
TfL has warned commuters to check the website for updates on bus routes and London Underground services. However, the walking map - shared on social media with the hashtag #WalkLondon - is a good alternative for those wanting to avoid public transport.
What bus routes are running?
The routes not affected by the strike and running a normal service are below:
66: Romford Station to Leytonstone bus station
142: Watford Junction to Brent Cross Shopping Centre
160: Catford to Sidcup Station
258: Watford Junction to South Harrow Station
268: Golders Green Station to Finchley Road
288: Queensbury to Broadfields Estate
298: Arnos Grove to Potters Bar
303: Edgware Station to Colindale
305: Edgware Station to Kingsbury Circle
340: Edgware Station to Harrow Bus Station
346: Upminster Station to Upminster Park Estate
370: Romford to Lakeside Shopping Centre
375: Romford Station to Passingford Bridge
404: Coulsdon to Caterham-on-the-Hill
406: Kingston to Epsom
411: Kingston to West Molsey
418: Kingston to Epsom
428: Erith to Bluewater Shopping Centre
463: Coulsdon South Station to Pollards Hill
465: Kingston to Dorking
467: Hook to Epsom
470: Colliers Wood Station to Epsom
492: Sidcup Station to Bluewater Shopping Centre
499: Gallows Corner to Heath Park Estate
626: Finchley Central Station to Potters Bar
628: Kingsbury to Southgate Station
631: Golders Green Station to Henrietta Barnett School
641: West Molesey to Teddington School
642: West Hendon Broadway/Edgware Station to London Academy
653: Muswell Hill Broadway to Kingsbury
683: Friern Barnet to Kingsbury
688: Southgate Station to Kingsbury
B12: Erith to Joydens Wood
B13: Bexleyheath Shopping Centre to New Eltham Station
B15: Bexleyheath Shopping Centre to Horn Park
E10: Northolt to Ealing Broadway Station
H2: Golders Green Station circular (via Hampstead Garden Suburb)
H3: Golders Green Station to East Finchley, Hilltop
H18: Harrow Bus Station circular (via Pinner & Wealdstone)
H19: Harrow Bus Station circular (via Wealdstone & Pinner)
K5: Ham to Morden Station
S1: Banstead to Lavender Fields
S3: Sutton Hospital to Malden Manor Station
X26: West Croydon to Heathrow Airport