Fears of chaos for Boxing Day shoppers in London as tube strike action and engineering works hit 11 underground lines

Fears of chaos for Boxing Day shoppers in London as tube strike action and engineering works hit 11 underground linesPlanned strikes by train drivers' union Aslef will cause 'significant disruption'Engineering works and seasonal closures are also expected to cause headaches for shoppers and commuters | UPDATED: 22:37 GMT, 24 December 2012 Planned tube strikes on Boxing Day are expected to cause chaos on the London Underground Planned tube strikes on Boxing Day are expected to cause chaos on the London Underground. The strike, and two further walkouts on the last two Fridays in January, is over a long-running row about bank holiday pay