Trustee of FC Jones and Son (a firm) v Jones [1996] EWCA Civ 1324 is an English unjust enrichment law case, concerning to what extent enrichment of the defendant must be at the expense of the claimant.

The firm became insolvent, which vested the account retrospectively into the trustee in bankruptcy.

Mrs Jones bought potato futures, and earned £50,760.

The official receiver claimed that under the Bankruptcy Act 1914 sections 37 and 38, the money belonged to it.

Significantly in Jones it was indicated that a fiduciary relationship was no longer an exclusive precondition for the use of equitable tracing, the fiduciary character of the defendant's receipt was expressly negatived.