Peter Watts KC

“We have been greatly helped by the analysis provided by Professor Watts in a characteristically lucid article, ‘Illegality and Agency Law: Authorising Illegal Action’ [2011] JBL 213”
Lord Toulson and Lord Hodge in Bilta (UK) Ltd v Nazir (No 2) [2015] UKSC 23 at [159]

“The reasoning in the Akai case has been the subject of strong criticism, however: Bowstead & Reynolds on Agency (21st edn, 2017) paras 8–49 to 8–50; P Watts, ‘Some Wear and Tear on Armagas v Mundogas—The Tension between Having and Wanting in the Law of Agency’ (2015) 1 LMCLQ 36, 48–56. In the Board’s respectful view, much of that criticism has considerable force”:
Lord Kitchin in East Asia Co Ltd v PT Satria [2019] UKPC 30 at [85]

“The facts of the case are somewhat complex and the reasoning of the opinions of Lord Westbury LC, Lord Cranworth and Lord Chelmsford is not always entirely easy to follow. The decision has been carefully and interestingly analysed by Professor Watts, ‘Tyrrell v Bank of London – an Inside Look at an Inside Job’ (2013) 129 LQR 527”:
Lord Neuberger in FHR European Ventures LLP v Cedar Capital [2014] UKSC 45 at [23]

“Authority to act as agent includes only authority to act honestly in pursuit of the interests of the principal.” The basis for this proposition is elucidated both in the comment that follows it [in Bowstead & Reynolds] and in a valuable article by the current main editor, Peter Watts, “Actual authority: the requirement for an agent honestly to believe that an exercise of power is in the principal’s interests” [2017] JBL 269.
“Professor Watts, who has done much to illuminate this area of the law, disputes that conclusion.”
Lord Leggatt in Philipp v Barclays Bank UK Plc [2023] UKSC 25 at [72] and [92]