UK Oil & Gas Investments PLC is an oil and gas investment company. The principal activity of the Company is to acquire a portfolio of direct and indirect interests in exploration, development and production oil and gas assets, which are based in the United Kingdom. The Company's segments are Oil exploration and production, Oil exploration and evaluation, and Corporate & Administrative. The Oil exploration and production segment includes producing business activities. The Oil exploration and evaluation segment includes non-producing activities. The Company specializes in finding and producing oil from unrecognized naturally-fractured rocks in the Weald Basin of southern England. Its portfolio consists of four onshore oil producing fields, four appraisal/development licenses, and four exploration licenses. Its onshore producing oil fields include Horndean, Avington, Lidsey and Brockham. Its development/appraisal assets include Horse Hill, Markwells Wood and Baxters Copse.