A controversial database holding information about every child in England is being tested by hundreds of social workers.
How do you feel about being filmed by people you can't see? We spoke to some Londoners to hear their views.
On 21 May, 2009 the Court of Appeal ruled that specialist surveillance units from the Metropolitan police had breached the human rights of Andrew Wood, an arms trade campaigner, when they photographed him in 2005 and stored the pictures on a police database.
If you have a question for the Met, email it to campaign@londonfile.org (Write ‘Questions for’ in subject line)