UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that DEEP.KBB GmbH, one of Europe's leading salt cavern design and underground energy storage engineering groups, has completed preliminary project design ("Design") for the Company's proposed new underground hydrogen storage facility located west of Weymouth in Dorset ("South Dorset" or "Site"). The Design, prepared for the Company's wholly owned UK Energy Storage subsidiary ("UKEn"), confirms the suitability of the Site for a material scale hydrogen storage project, comprising 24 salt caverns at a depth of ~1330 m below surface. The project is fully in keeping with the Government's Clean Power 2030 ambitions.