Commentary on Sections Part 10 – Criminal Justice Chapter 3 – Detention under a Public Protection Order Without Restrictions Section 181 - First extension of period of order
This section provides that a public protection order without restriction can be extended for 6 months where the person concerned is still liable to be held under the order and the “initial period” of the order has not ended.  The “initial period” is six months beginning with the date of the order.