Why was my neighbour's body not found for two years?

Residents in a south London block of flats are considering legal action against a housing association, after their neighbour lay dead for two and a half years before her body was found, despite their efforts to raise the alarm. 58-year-old Sheila Seleoane, was a medical secretary, who was found in her flat in Peckham last year. For Sheila's neighbours though it had been obvious for a long time that something was wrong.This week we’re looking more closely at Shelia's story, to explore what happened and what it tells us about modern Britain. Harry Farley speaks to Today's Mishal Husain, and in the first of three reports, he asks why it took so long before Sheila was discovered?