Jan. 26 (Bloomberg) -- U.K. fuel truck drivers who transport fuel from the ConocoPhillips-owned Humber oil refinery in northern England plan to extend a strike to 14 days from an original seven days, Unite, the nation’s largest union, said today in a statement posted on its website.

The strike by 123 drivers over pay and conditions began on Jan. 24. The drivers are employed by logistics company Wincanton Plc, which carries fuel to Conoco’s Jet-brand stations, the union said.

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