Rob Turner was convicted in 2009 of sexual activity with a young girl
But 39-year-old Essex actor was on BBC soap as extra in 2011 scene
EastEnders did not know of his conviction before he was on show
A sex offender teacher was spotted acting in EastEnders by his former pupils
Rob Turner, 39 – a former music teacher who admitted sexual activity with a young girl at Basildon Crown Court in Essex four years ago – was on the popular BBC soap for one episode as an extra.