On 14 March 2016, the CBI published a Notification Process for (Re)Insurance Undertakings when Outsourcing Critical or Important Functions or Activities under Solvency II. The paper aims to assist undertakings in complying with their obligations under the European Union (Insurance and Reinsurance) Regulations, 2015.  Solvency II does not require pre-approval from the CBI but prior-notification affords undertakings the opportunity to address any concerns which the regulator may have. The paper sets out the CBI's expectations with regard to the content, form and timing of the notifications. The level of due diligence undertakings are expected to engage in (prior to outsourcing) is also addressed. The paper applies to individual and group level notifications.