A strike by bus workers in London threatens to cause travel chaos in parts of the capital tomorrow, a union warned today.

Around 2,500 drivers and engineers at Metroline will walk out for 24 hours in a row over pay, hitting routes out of King's Cross, Wembley, Holloway, Perivale, Edgware and Cricklewood.

The Transport and General Workers' Union has rejected an offer it said was worth 4% because it did not meet demands for a basic wage of £11 an hour.

Regional officer Jim Buckley said: "We have done our best to resolve our differences through negotiation but the company was unwilling to put more money on the table."

Further strikes will be held on November 20 and 27 unless the deadlock is broken.