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Marek Petecki


Marek Petecki

+44 (0)20 7400 8442

Marek advises on a wide range of corporate and commercial matters, including mergers & acquisitions, debt and equity financings (including IPOs and secondary public offers), and joint ventures. 

Marek has particular expertise in advising on transactions where technology or intellectual property is central.   Many of his clients are active in the TMT, Life Sciences or Consumer Products sectors. He acts for start-ups, SMEs and multinationals, as well as venture capital and private equity investors.

Marek also advises on the establishment of partnerships and other investment vehicles. He recently acted on the establishment of a corporate venture capital unit for a FTSE 100 consumer products company.


  • BA History & Anthropology, University College London
  • Qualified 2003
  • Partner 2010
  • Joint Managing Partner 2016

Recommended for

  • M&A: smaller deals up to £50m - Legal 500 (2019/2018/2017/2016)

  • Pharmaceuticals and Biotechnology - Legal 500 (2019/2018/2017)

  • Commercial Contracts - Legal 500 (2017/2016)

  • Partnership - Legal 500 (2016/2015)
  • Corporate/M&A - Chambers and Partners (2016)
  • Practitioner - Chambers and Partners (2015)
  • Partnership - Chambers and Partners (2015)

"The ‘highly responsive, commercial’ Marek Petecki is a ‘standout partner’ who ‘finds and communicates practicable solutions to issues, and tailors his work carefully’; he is noted for his strength in M&A involving IP and technology. Petecki’s highlights included advising AstraZeneca on the £135m sale of its pharmaceutical manufacturing facility in Avonmouth to Avara."  Legal 500 2017

"Marek Petecki advised Diageo on a joint venture with entrepreneur Piers Adam to develop a new whisky brand, Copper Dog, among other matters." - Legal 500 2017

"The ‘knowledgeable, calm, pragmatic and extremely responsive’ Marek Petecki advised AstraZeneca UK on the $215m sale of its rights in prescription medicine, Entocort, to Tillots." - Legal 500 2016 

"Marek Petecki...key figure in the team, who acts for clients including Blooms Properties and Pearl Diver Capital." - Legal 500 2016 

"Marek Petecki is a key contact" - Chambers and Partners 2015

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