If a firm that proposes to operate an ATS applies for variation of Part IV permission to carry on an additional regulated activity necessary to operate the ATS, the FSA considers that, for the purposes of SUP 6.3.20 G (Applications involving significant changes), the proposal will usually cause a significant change to the firm's business or risk profile. The FSA may therefore require the firm to complete the appropriate parts of the full application pack (see AUTH 3.9), as directed by the FSA.
If a firm that proposes to operate an ATS already has permission to carry on the regulated activity necessary to operate the ATS, the firm should give notice of the proposal to the FSA before it begins to operate the ATS, in accordance with Principle 11 (Relations with regulators). This is because the FSA considers that this is a business expansion that could have a significant impact on the firm's risk profile or resources (see SUP 15.3.8 G). When the FSA receives notice, it may request further information from the firm such as the completion of a systems form.