A matter pertaining to a position, plan, procedure, criteria or instruction to be applied to any negotiations carried on or to be carried on by or on behalf of the municipality or local board; a trade secret or scientific, technical, commercial, financial or labour relations information, supplied in confidence to the municipality, including communications necessary for that purpose, which, if disclosed, could reasonably be expected to prejudice significantly the competitive position or interfere significantly with the contractual or other negotiations of a person, group of persons, or organization, and for the purpose of giving instructions to officers and employees of the City of London. (6.2/10/CSC)