11.—(1) Where a deceased person was immediately before his death beneficially entitled to a joint tenancy of any property, then, if, before the end of the period of six months from the date on which representation with respect to the estate of the deceased was first taken out or 18 months from the date of the death (whichever first occurs), an application is made for an order under Article 4, the court for the purpose of facilitating the making of financial provision for the applicant under this Order may order that the deceased's severable share of that property, at the value thereof immediately before his death, shall, to such extent as appears to the court to be just in all the circumstances of the case, be treated for the purposes of this Order as part of the net estate of the deceased.
(2) In determining the extent to which any severable share is to be treated as part of the net estate of the deceased by virtue of an order under paragraph (1), the court shall have regard to any capital transfer tax payable in respect of that severable share.
(3) Where an order is made under paragraph (1), the provisions of this Article shall not render any person (other than a surviving joint tenant) liable for anything done by him before the order was made.
(4) For the avoidance of doubt it is hereby declared that for the purposes of this Article there may be a joint tenancy of a chose in action.