This Practice Note considers the undertaking (also referred to as a cross-undertaking) in damages that an applicant must give to the court as the price of obtaining an interim injunction. Reference should also be made to Practice Notes: • Interim injunctions—undertakings, which sets out the underlying principles concerning the provision of undertakings in the context of interim injunctive relief • Freezing injunctions—cross-undertakings and fortification, in particular, for details on fortification of the cross-undertakings The principles discussed in this Practice Note, in addition to the two Practice Notes above, apply broadly when a party is seeking interim injunctive relief. However, for guidance on specific forms of injunctions, including freezing, proprietary, search and imaging orders, see: • Freezing injunctions—overview • Proprietary asset preservation injunctions—overview • Search and imaging orders—overview This Practice Note provides guidance on the interpretation and application of the relevant provisions of the CPR. Depending on the court in which your matter is proceeding, you may also need to be mindful of additional provisions—see further: Court specific guidance below. 6 April 2025 changes The CPR provisions