Professor Diana Gibb (UCL MRC Clinical Trials Unit) explains the impact of a new drug package for HIV sufferers who start treatment late, shown in a UCL led trial to save three lives for every 100 people treated.
Read: Guardian, More: UCL News,
BBC Radio 4 'Today' (from 53 mins 33 secs),
BBC World Service 'World Update' (from 14 mins)