Mike McCann, who carries the title of Keeper of the Great Clock, said: 'After 150 years, Big Ben still holds a special place in the hearts of Londoners and the world as a magnificent example of engineering and building genius.' The bell, cast in Whitechapel on 10 April 1858, was first rung in the Great Westminster Clock on 11 July 1859. In particular to Dave, whose persistence finally motivated us to release this new version.The name Big Ben is often used to describe the tower, the clock and the bell but technically only refers to its largest bell.

Thanks to all who left comments and suggestions for improvement.

NB Sounds will only play through earphones on 1st gen iPod Touch. Having it chime every quarter of an hour and toll on the hour (the chiming and tolling sounds will play even when the app is not open, so long as your device is not muted and you allow notifications in the General Settings for Big Ben) Have your iPhone (or iPod Touch) display the time of day in style.

1859 was the beginning for all three elements when the Clock Tower was completed, the Great Clock started on 31 May and the Great Bell’s chimes were heard for the first time on 11 July. The name Big Ben is often used to describe the tower, the clock and the bell but the name was first given to the Great Bell. During 2009, the UK Parliament celebrated the 150th anniversary of its world famous Clock Tower, Great Clock and Great Bell.

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