Royal British Bank v Turquand (1856) 6 E&B 327 is a UK company law case that held people transacting with companies are entitled to assume that internal company rules are complied with, even if they are not. This "indoor management rule" or the "Rule in Turquand's Case" is applicable in most of the common law world. It originally mitigated the harshness of the constructive notice doctrine, and in the UK it is now supplemented by the Companies Act 2006 sections 39-41. Facts Mr Turquand was the official manager (liquidator) of the insolvent Cameron's Coalbrook Steam, Coal and Swansea and Loughor Railway Company. It was incorporated under the Joint Stock Companies Act 1844. The company had given a bond for £2,000 to the Royal British Bank, which secured the company's drawings on its current account. The bond was under the company's seal, signed by two directors and the secretary. When the company was sued, it alleged that under its registered deed of settlement (the articles of association), directors only had the power to borrow up to an amount authorised by a company resolution. A resolution had been passed but did not specify how much the directors could borrow. Judgment Sir John Jervis CJ, for the Court of Exchequer Chamber ruled that the bond was valid, so the Royal British Bank could enforce the terms. He said the bank was deemed to be aware that the directors could borrow only up to the amount resolutions allowed. Articles of association were registered with Companies House, so there was constructive notice. But the bank could not be deemed to know which ordinary resolutions passed, because these were not registrable. The bond was valid because there was no requirement to look into the company's internal workings. This is the indoor management rule, that the company's indoor affairs are the company's problem. Jervis CJ gave the judgment of the Court. Pollock CB, Alderson B, Cresswell J, Crowder J and Bramwell B concurred. Significance The rule in Turquand's case was not accepted as being firmly entrenched in law until it was endorsed by the House of Lords. In Mahony v East Holyford Mining Co Lord Hatherly phrased the law thus: So, in Mahoney, where the company's articles provided that cheques should be signed by any two of the three named directors and by the secretary, the fact that the directors who had signed the cheques had never