I can confirm that the FCO does hold information relevant to your requests.
As your requests relate to same or similar information we are aggregating them for the purposes of Regulation 5 of the Limits and Fees Regulations 2004 and Section 12 of FOIA. Section 12 of the Freedom of Information Act makes provision for public authorities to refuse requests for information where the cost of dealing with them would exceed the appropriate
limit. The limit has been specified in the Freedom of Information and Data Protection (Appropriate Limit and Fees) Regulations 2004. For central government the appropriate limit is set at £600. This represents the estimated cost of one or more persons spending 3 ½ working days in determining whether the Department holds the information, and locating, retrieving and extracting it. Your requests as presently formulated are widely-framed and I estimate that it will take more than 3 ½ working days to locate, retrieve and extract this information. In these circumstances we are not obliged under the Act to comply with your requests.