In accordance with the Act, this letter represents a Refusal Notice for 
this particular request under Section 17(4). 

Section 17(4) of the Act provides:

(4) A public authority is not obliged to make a statement under subsection 
(1)(c) or (3) if, or to the extent that, the statement would involve the 
disclosure of information which would itself be exempt information.

The Metropolitan Police Service can neither confirm nor deny that it holds 
the information you requested as the duty in Section 1(1)(a) of the 
Freedom of Information Act 2000 does not apply, by virtue of the following 
exemption:

S30(3) Investigations

The MPS will not disclose whether it has carried out an investigation, or 
whether an investigation is taking place, unless that information has 
already been placed in the public domain, through channels such as the 
media or the court process. Nor will we confirm whether or not 
correspondence has been received by a force from a third party. 

Any disclosure under Freedom of Information is a release of information to 
the world in general and not an individual applicant. Therefore, simply 
confirming or not that such information were held would reveal which force 
has and hasn't had contact with the IWF.