Pinsent Masons Advises Ithaca Energy On Transformational North Sea Merger With Eni’s UK Upstream Business

03 May 2024 | 12:48 pm |

Multinational law firm Pinsent Masons is advising leading UK independent exploration & production company Ithaca Energy plc on its transformational combination with Eni S.p.A.’s UK upstream oil and gas assets, establishing Ithaca Energy as the second largest independent operator in the UKCS by 2024 production.

The deal is expected to create a strategic platform for long-term growth in the UK North Sea combining Ithaca Energy’s portfolio of development projects and efficient operating model with enhanced production from the Eni UK Business and Eni’s world-class technical expertise.

The Pinsent Masons team advising on the transaction was led by global head of O&G Rosalie Chadwick and partners Jonathan Woolf and Julian Stanier.

Commenting on the deal Rosalie Chadwick said: “This transaction continues our long history of advising Ithaca Energy on key corporate milestones on its journey to becoming one of the largest operators in the UKCS. We are delighted to have continued to assist Ithaca Energy on this latest transformational deal.”

The firm has an established relationship with Ithaca Energy spanning over 16 years which includes advising on Ithaca Energy’s £2.5bn IPO and US$1.5bn acquisition of Siccar Point in 2022.

Latest press releases

Show me all press releases

Pinsent Masons appoints infrastructure M&A specialist Candice Lambeth

Multinational law firm Pinsent Masons has today announced the appointment of Candice Lambeth as a partner in its corporate team in London.

Pinsent Masons bolsters Middle East International Arbitration practice with partner hire

Multinational law firm Pinsent Masons has appointed Shanelle Irani as a partner in its International Arbitration team in Dubai, further strengthening the firm's capability in high-value commercial and investor-state disputes across the region.

Pinsent Masons hires leading IP partner duo Kai Ruting and Philipp Widera in Germany

Multinational law firm Pinsent Masons has appointed intellectual property (IP) partners Dr. Kai Rüting, LL.M. and Philipp Widera, LL.M. to join its Düsseldorf office.

People who viewed this press release also viewed

Show me all press releases

Pinsent Masons appoints infrastructure M&A specialist Candice Lambeth

Multinational law firm Pinsent Masons has today announced the appointment of Candice Lambeth as a partner in its corporate team in London.

Pinsent Masons announces FY26 results

Multinational law firm Pinsent Masons has today announced its unaudited financial results for the year ending 30 April 2026. The firm has generated a revenue increase of 3.3% to £703m. Profit per equity partner is £740k. 

Pinsent Masons advises EDF power solutions and ESB on strategic partnership with Sumitomo Corporation in Gwynt Glas Offshore Wind Farm

Multinational law firm Pinsent Masons has advised EDF power solutions and ESB on the sale of a one-third interest in the Gwynt Glas Offshore Wind Farm to Sumitomo Corporation, marking an important milestone in the development of one of the UK's most significant floating offshore wind projects.

For all media enquiries, including arranging an interview with one of our spokespeople, please contact the press office on

+44 (0)20 7418 8199 or 

Location contacts

We are processing your request. \n Thank you for your patience. An error occurred. This could be due to inactivity on the page - please try again.