The UK Corporate Governance Code (from here on referred to as "the Code") is a part of UK company law with a set of principles of good corporate governance aimed at companies listed on the . It is overseen by the Financial Reporting Council and its importance derives from the Financial Conduct Authority's Listing Rules. The Listing Rules themselves are given statutory authority under the Financial Services and Markets Act 2000 and require that public listed companies disclose how they have complied with the code, and explain where they have not applied the code – in what the code refers to as 'comply or explain'. Private companies are also encouraged to conform; however there is no requirement for disclosure of compliance in private company accounts. The Code adopts a principles-based approach in the sense that it provides general guidelines of best practice. This contrasts with a rules-based approach which rigidly defines exact provisions that must be adhered to.
The Code is essentially a consolidation and refinement of a number of different reports and codes concerning opinions on good corporate governance. The first step on the road to the initial iteration of the code was the publication of the Cadbury Report in 1992. Produced by a committee chaired by Sir Adrian Cadbury, the Report was a response to major corporate scandals associated with governance failures in the UK. The committee was formed in 1991 after Polly Peck, a major UK company, went insolvent after years of falsifying financial reports. Initially limited to preventing financial fraud, when BCCI and Robert Maxwell scandals took place, Cadbury's remit was expanded to corporate governance generally. Hence the final report covered financial, auditing and corporate governance matters, and made the following three basic recommendations:
These recommendations were initially highly controversial, although they did no more than reflect the contemporary "best practice", and urged that these practices be spread across listed companies. At the same time it was emphasised by Cadbury that there was no such thing as "one size fits all". In 1994, the principles were appended to the Listing Rules of the , and it was stipulated that companies need not comply with the principles, but had to explain to the stock market why not if they did not.