The Justice Secretary may revoke a security patient's monitored leave by written notice and require the security patient to return to the designated mental health service if the Justice Secretary is satisfied that—
(a) the revocation is necessary to prevent—
(i) serious deterioration in the security patient's mental or physical health; or
(ii) serious harm to the security patient or to another person; or
(b) the security patient has failed to comply with a condition to which the monitored leave is subject; or
(c) the purpose for the monitored leave no longer exists.