(1) A registered undertaking or former registered undertaking to which this subsection applies by virtue of subsection (4) shall, not later than 30 days (or such longer period as the Authority may permit in its discretion) after the expiration of each period of 6 months, the first such 6 months period commencing on 1 January 2009, make an information return to the Authority -

(a) in such form as may be prescribed, and

(b) subject to subsections (2) and (5), containing such information concerning the undertaking's health insurance business or former health insurance business, as the case may be, during the period of 6 months concerned (in this Part referred to as the 'relevant period') as may be prescribed.

(2) Subject to subsection (5) and (6), the information referred to in subsection (1) which may be prescribed includes -