In pictures: Big Ben's big turn off

• poon cho tang

  1 Nov 05, 23:29

  
  
  Big Ben's chimes are stopped to allow work on St Stephen's Tower clock and bells.
• poon cho tang

  1 Nov 05, 23:29

  
  
  The hands of the clock on St Stephen's Tower are moved to the 12 o'clock position while maintenance work is carried out.
• poon cho tang

  1 Nov 05, 23:30

  
  
  Engineers are replacing rubber hammers on the hour bell and three of the quarter hour bells.
• poon cho tang

  1 Nov 05, 23:31

  
  
  A Westminster engineer holds a worn hammer seal of Big Ben and two replacement seals.
• poon cho tang

  1 Nov 05, 23:32

  
  
  Trainee clock mechanic Huw Smith makes adjustments to the settings of the clock.
• poon cho tang

  1 Nov 05, 23:32

  
  
  The clock is expected to restart at about 1600 GMT on Sunday, ending its longest switch off in 22 years.
• poon cho tang

  1 Nov 05, 23:33

  
  
  The stopping of the clock coincides with the end of British Summer Time and the start of Greenwich Mean Time - clocks have gone back an hour.