CLEAN : Hundreds more police for London

The transcript discusses the increased policing operations in London in response to the Boston Marathon, focusing on high visibility patrols and safety measures for the London Marathon. It emphasizes the importance of keeping personal belongings attended to avoid suspect packages and hoax threats. Coordination with Boston authorities is ongoing, but there is no current link between the two marathons, and London's threat level remains unchanged.

Who are the partners involved in the policing operation for the London Marathon?

What kind of threats are the authorities prepared to deal with during the event?