This week the Human Genetics Commission reported that police are routinely arresting people to gather DNA evidence. We hear from one of the authors Professor Sarah Cunningham-Burley.
In the studio for the Guardian to debate the issues raised by the report are legal affairs editor Afua Hirsch and home affairs editor Alan Travis.
We also hear from Professor Jim Fraser, director of the University of Strathclyde's Centre for Forensic Science. He says that while DNA evidence is very reliable, it's not failsafe.
Plus we hear views from the streets of London - most people in our small survey supported the expansion of the database.
Should those arrested (but not charged) on suspicion of serious offences like rape have their DNA retained on the police database?
Why not just register everyone's DNA?
And how reliable is the science?
Post your views and continue the debate at Liberty Central.
