Teacher at top school had affair with girl

A former teacher at one of London’s top girl’s schools is facing jail after admitting sexual activity with a teenage girl. Christopher Stephenson, 32, admitted having an affair with the girl between July 2007 and January 2009 while he was in a position of trust. The teenager, who cannot be named for legal reasons, is said to have been aged 16 and 17 during the period of Stephenson’s offending. At this time Stephenson was in his twenties and was employed…