Possible Clues:

• A character starting trade needs to organise a bit of capital
• European, for instance, to keep an eye on part of our capital
• London area north of the Thames
• In which one would wear out a whistle
• See 1
• Side of London associated with Cockneys (4.3)
• Dined with daughter, hosting son, where plates are for standing on?
• Here find Cockney chief carrying weapon?
• Cockney newsman carried a gun
• London region associated with Cockneys