 Whilst in the care of Tanya's mother, Cora Cross (Ann Mitchell), Oscar suffers a fall whilst playing and suffers minor injuries.In September 2012, Oscar starts Walford Primary School and makes friends with Dennis Rickman Jnr (Harry Hickles), as Tanya and Dennis's mother, Sharon Rickman (Letitia Dean) feud briefly.In June 2013, Tanya, Lauren and Oscar move to Exeter so Lauren can go to rehab for her addiction to alcohol.