In what format should information be provided?

Requesters have the right to specify their preferred means of communication. Normally the information should be sent by whatever means is most reasonable. For example, if the requester has made their request by email, and the information is an electronic document in a standard form, then it would be reasonable for you to reply by email and attach the information. Again the FOI can advise on this aspect of a request, if it is an issue.