Possible Clues:

• Part of London noted for its cockney culture
• Part of London that includes the Docklands
• Part of London where Cockney originated
• Where Jack the Ripper killed
• Cuckoo nested round a part of the capital
• Cockney's part of London
• Home to Cockneys
• Where Cockney is spoken in London
• Bow surrounds metal (not lead!) wrapping gun
• Part of London noted for its converted docklands