London-based energy company UK Oil & Gas PLC (<a href="https://www.londonstockexchange.com/stock/UKOG/uk-oil-gas-plc/company-page" target="_blank">LON:UKOG</a>) has received another letter of support (LoS), from the low-carbon investments initiative The Solent Cluster, for its project to build an underground salt cavern hydrogen storage facility in Dorset, southwest England.