This Practice Note is for use when determining applicable law where the contract was entered into between 17 December 2009 and before 1 January 2021. For contracts entered into on different dates, a different applicable law regime will be applied by the UK courts. Which regime will apply, will depend on the date on which the contract was entered into. For guidance, see Practice Note: Applicable law regimes. This Practice Note considers the general provisions in Regulation (EC) 593/2008 on the law applicable to contractual obligations (Rome I). It covers the following: Overriding mandatory provisions (Article 9), Consent and material validity (Article 10), Formal Validity (Article 11), Scope of Law Applicable (Article 12), Incapacity (Article 13), Voluntary Assignment/ Contractual Subrogations (Article 14), Legal Subrogation (Article 15), Multiple Liabilities (Article 16), Set-off (Article 17), Burden of proof (Article 18), Habitual Residence (Article 19), Exclusion of Renvoi (Article 20) and Public Policy (Article 21). For other aspects of the regulation, see Practice Note: Applicable law—a guide for dispute resolution practitioners. The impact of the UK’s