Styled as a breaking news clip, Rippon says Santa has been spotted in London "not with an elf but with a bear". The end of the teaser shows Paddington Bear running across a roof.
±±¾©Èü³µpk10 revealed exclusively last week that Paddington Bear would star in M&S' Christmas ad. It has been created by Grey London, which picked up the account last year.
The ad coincides with the launch of the second Paddington film, Paddington 2, which is out in the UK on 10 November.