Londoners are being urged to report suspicious behaviour, in a new counter terrorism campaign.

The Met is asking people to pass on information about any unusual activity or behaviour to the confidential Anti-Terrorist Hotline and its website.

'If you suspect it, report it', is the key message of the new campaign, which will be advertised for five weeks.

Peter Clarke, Specialist Operations Assistant Commissioner, said: "Terrorists will not succeed if suspicious activity is reported to the police.

"As people go about their normal day-to-day lives, they may spot something which strikes them as suspicious.

"Terrorists live within our communities, making their plans whilst doing everything they can to blend in, and trying not to raise suspicions about their activities.

"They have a lot of work to do before they attack. They need money and may commit cheque, credit card and identity fraud to finance their activities."

Mr Clarke said that although the threat of attack remained real, the campaign had not been launched in response to any specific threat.