Before you can consider issuing a Formal Information Notice
you
must have written to the person informally asking
for the information or documents you need.
You do not need to write again if you have already written as
part of your normal enquiries. If you have only asked for the
information or documents in person or by telephone you must write
informally.
When writing informally make sure that you:
Do not allow them to delay the case unnecessarily, and do not
issue repeated reminders.
A Formal Information Notice should
not be issued unless the person has refused to
co-operate with an informal written request for information, or has
failed to produce some or all of that information within the time
shown in the informal request.
You may feel that it is appropriate to telephone them once to
remind them, or you may want to issue a Formal Information Notice
without giving them any reminders, especially if your informal
written request followed up a previous telephone request.