Subrogation – Circumstances in which doctrine applicable. The Supreme Court dismissed an appeal by the appellant, M, against a finding that the respondent bank had been entitled to claim a charge over the freehold of her property by invoking a right to be subrogated to an unpaid vendor's lien over the freehold. It held that, among other things, M had been unjustly enriched at the expense of the bank, albeit not because of any fault of hers, and the bank had a valid unjust enrichment claim against M, which was properly reflected in its claim to be subrogated.