“… not confined to cases of money paid under a mistake of law but is a general principle applicable to any acts of the court’s officers (para 43, citing Re Tyler [1907] 1 KB 865).…”
“…ty expects of the court itself is made clear in the authorities: see Ex parte James at 614; Ex parte Simmonds (1885) QBD 308 at 312 per Lord Esher MR; Re Tyler [1907] 1 KB 865 per Vaughan Williams LJ at 869, Farwell LJ at 871 and Buckley LJ at 873.…”