Companies Act 2006: Primary legislation governing company formation, operation, and governance. Covers directors' duties, corporate governance requirements, share capital structures, and fundamental shareholding rules.

Financial Services and Markets Act 2000: Regulatory framework for financial services organizations, including investment restrictions and requirements for holding companies operating in the financial sector.

Corporation Tax Act 2010: Legislation governing corporate taxation, including specific provisions for holding company structures, group relief mechanisms, and dividend distribution regulations.

Insolvency Act 1986: Legal framework for corporate insolvency, including group company insolvency provisions, wrongful trading regulations, and directors' liability in group structures.

Modern Slavery Act 2015: Compliance requirements for larger groups regarding modern slavery and human trafficking, including reporting obligations.

Small Business, Enterprise and Employment Act 2015: Legislation covering transparency requirements and PSC (People with Significant Control) register obligations for corporate structures.

FCA Handbook: Regulatory guidelines and compliance requirements set by the Financial Conduct Authority, applicable to regulated holding companies.

UK Corporate Governance Code: Best practice guidelines for corporate governance, particularly relevant for listed companies and their holding structures.

EU Retained Law: Post-Brexit retained European Union legislation that continues to affect UK company operations and group structures.

International Accounting Standards: Global accounting principles and standards that must be considered in group company financial reporting.

Anti-Money Laundering Regulations: Regulatory requirements for preventing money laundering and financial crime within corporate group structures.