If a part only of any mortgaged land is required by the acquiring authority, and—
then the value of that part, and also the compensation (if any) to be paid in respect of the severance thereof or otherwise, shall be settled by agreement between the mortgagee and the party entitled to the equity of redemption of that land on the one part and the acquiring authority on the other and, if the parties fail to agree, shall be determined by the Upper Tribunal.
The amount so agreed or awarded shall be paid by the acquiring authority to the mortgagee in satisfaction or part satisfaction of his mortgage debt.
On payment or tender of the amount so agreed or awarded the mortgagee shall convey or release all his interest in the land to be taken to the acquiring authority or as they direct.
A memorandum of what has been so paid shall be endorsed on the deed creating the mortgage and shall be signed by the mortgagee; and a copy of the memorandum shall at the same time (if required) be furnished by the acquiring authority at their expense to the person entitled to the equity of redemption of the land comprised in the mortgage.
If, on payment or tender to any such mortgagee of the amount of compensation agreed or awarded, the mortgagee fails to convey or release to the acquiring authority, or as they direct, his interest in the land in respect of which the compensation has been so paid or tendered, or if he fails to adduce a good title thereto to the satisfaction of the acquiring authority, it shall be lawful for the acquiring authority to pay into court the amount of the compensation; and subsections (4) to (6) of the last foregoing section shall apply as if references in those subsections to the land were references to the part of the land comprised in the mortgage which is required by the acquiring authority.
Notwithstanding the foregoing provisions of this section the mortgagee shall have the same powers and remedies for recovering or compelling payment of the mortgage money or the residue of it (as the case may be), and the interest thereon, as against the remaining land comprised in the mortgage, as he would have had for recovering or compelling payment thereof as against the whole of the land originally comprised in the mortgage.