NHS England may investigate whether an integrated care board has failed or is likely to fail to comply with a requirement imposed by regulations under section 6E(1A) or (1B) (a "patient choice requirement").
NHS England may direct an integrated care board—
Where an investigation under subsection (1) is being or has been carried out, NHS England may accept from the integrated care board an undertaking that it will take any action falling within subsection (2)(a) or (b) that is specified in the undertaking, within a period that is so specified.
Where NHS England accepts an undertaking under subsection (3), NHS England may not—
unless the integrated care board fails to comply with the undertaking.
If an integrated care board from which NHS England has accepted an undertaking under subsection (3) complies partially with the undertaking, NHS England must take the partial compliance into account in deciding whether to do something mentioned in subsection (4)(a) or (b).
Schedule 1ZA makes further provision about undertakings.