When the Queen visited Cambridge to open the new Law Faculty building in 1996, an exhibition concerning the law relating to horses was devised for Her Majesty's entertainment. A revised edition of the exhibition might cover two contributions made by horses to the development of the law in 2003: Mirvahedy v. Henley [2003] UKHL 16, [2003] 2 W.L.R. 882 on liability under section 2(2) of the Animals Act 1971 (noted above) and Habton Farms Ltd. v. Nimmo [2003] EWCA Civ 68, [2003] 3 W.L.R. 633 on the measure of damages for breach of warranty of authority by an agent.

Nimmo, a bloodstock agent, sometimes helped Williamson, a racehorse owner, to find horses, but he had no authority to buy on Williamson's behalf. On 12 October 1998 he agreed to buy a racehorse, High Spirits, from Habton Farms for 70,000, making it clear that he was acting as an agent.