The first of three planned bus strikes in London this month will take place tomorrow with commuters being warned they could face travel chaos.

Up to 27,000 bus drivers and other workers, all members of Unite union, will walk out as part of a long-running campaign for a single agreement covering their pay, terms and conditions.

The union said that in contrast to Tube drivers, there is no collective pay deal for bus drivers, with wages negotiated on a company by company basis.

There are more than 80 different pay rates covering drivers doing the same job, leading to differences in hourly rates of over £3, said Unite.

Transport for London slammed the action saying their demands ‘make no sense’ and the strike was ‘totally unnecessary’.

There will be limited services available on some routes but commuters are being urged to make alternative travel arrangements.

Thousands of commuters were affected by the first strike which took place last month.

The strike starts tomorrow at 4am until Friday morning.

The following routes will NOT be affected and will run as normal:

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

Holders of bus and tram pass season ticket, 11-15 Zip Oyster photocard or 16+ Zip Oyster photocard with free bus and tram travel will be allowed to use it on the Tube, DLR and London Overground services on reasonable routes only.

To use your pass show it to a member of staff and ask to be let through the gates.

Two further strikes are scheduled for next Friday, February 13 and Monday, February 16.