A Competent Persons Report dated 17 December 2021 for the Niger Assets was compiled by CGG Services (UK) Ltd which certified 2C resources. For Niger, the Net portion of the gross resources are attributable to Savannah before royalties, taxes and government share of profit.

A Competent Person’s Report for the Nigeria Assets was compiled by CGG Services (UK) Ltd which certified 2P reserves and 2C resources as at 31 December 2023.