Holroyd v Marshall (1862) 10 HLC 191, 11 ER 999 was a judicial decision of the House of Lords. In that case the House of Lords affirmed that under English law a person could grant a mortgage or other security interest over future property, ie. property that they did not actually own at the time of granting the charge. Prior to decision, the generally accepted principle under English law was that pursuant to the nemo dat rule it was impossible for a person to convey a security interest in property which they did not own at the time of granting the charge.