First redetermination - US$525m borrowing facility

Serica Energy plc

("Serica" or the "Company")

First redetermination under US$525 million borrowing facility

London, 3 July 2024 - Serica Energy plc (AIM: SQZ), is pleased to announce that it has completed the first semi-annual redetermination under its reserve-based lending ("RBL") facility. Reflecting the increased reserves, together with the programme of hedging recently implemented, the borrowing base has been increased from US$463 million up to the full amount of the committed facility of US$525 million.

Following this redetermination, and reflecting the previously reported cash and cash equivalents of £301.6 million and debt drawings of US$231.0 million (£182.0 million) as at 26 June 2024, Serica's liquidity is now in excess of £500 million.

Martin Copeland, Chief Financial Officer of Serica, said:

"We are grateful for the support of our bank group in completing our first redetermination under the new RBL. Serica's robust liquidity supports our ability to deliver on the two-pronged strategy of investing in our assets and executing on attractive M&A opportunities."

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NOTES TO EDITORS

Serica Energy is a British independent oil and gas exploration and production company with a portfolio of UKCS assets.

Serica has a balance of gas and oil production. The Company is responsible for about 5% of the natural gas produced in the UK, a key element in the UK's energy transition.

Serica's producing assets are focused around two main hubs: the Bruce, Keith and Rhum fields in the UK Northern North Sea, which it operates, and a mix of operated and non-operated fields tied back to the Triton FPSO. Serica also has operated interests in the producing Columbus (UK Central North Sea) and Orlando (UK Northern North Sea) fields and a non-operated interest in the producing Erskine field in the UK Central North Sea.

Serica has a two-pronged strategy for growth comprising investment in its existing portfolio and M&A.

Further information on the Company can be found at www.serica-energy.com. The Company's shares are traded on the AIM market of the London Stock Exchange under the ticker SQZ and the Company is a designated foreign issuer on the TSX. To receive Company news releases via email, please subscribe via the Company website.