Possible Clues:

• Fake, pretentious
• Does up in a knot - that's false
• Additional information given to Strasbourg party is false
• Does this have you surrounded by bits of false Spode?
• Phoney
• It means ''false''
• Insincere person of note attending Brussels function?
• False - souped (anag)
• Deceptively resembling soup Edward shortly dished up
• It's not really used as a prefix