An urban treasure hunt with participants expected to take risks and interact with strangers will take in hidden parts of the East End.

The free event promises to transform Tower Hamlets and Hackney into an urban playground where participants will have to collaborate during the three-hour treasure hunt leading them to The Search Party.

Participants can choose from one of three one-and-half mile trails, taking them on a path dotted with clues and capers leading and misleading them through hidden gardens and side streets.

En route they may find themselves taking taste tests, decoding street signs or even herding sheep.

Clues will reveal themselves in surprising ways: a message in flowers, an unmarked taxi or an actor in disguise.

Search Party-goers can look forward to cocktails, gourmet food and entertainment such as swing dancing and hands-on cookery with Jamie’s Ministry of food.

The event is held on July 23, as part of London 2012 Open Weekend.

Search party starting points are from the Museum of Docklands, Shoreditch Trust in Orsman Road, and Netil House in Westgate Street, Hackney.

Places are strictly limited. Register online at www.searchpartylondon.org or register in person on the day - subject to availability.