jo frost (born 27 june 1970) is a british nanny who hosted a television program broadcasted in the united kingdom called "supernanny", first aired in 2004. she later did the united states version, and it first aired in january 2005. supernanny ended in march 2011 in the united states and 7 september 2012 in the united kingdom. frost now does "jo frost: nanny on tour" on the up channel.