At 122 seconds, it is one of the longest adverts ever shown. Advertising the little brown Hovis loaf, which was first sold 122 years ago, it follows a 13-year-old boy through 12 decades of British history and will be shown for the first time on Friday, in the middle of ITV's Coronation Street. This scene is one stop on the boy's extraordinary journey and vividly brings a bustling Victorian street back to life.