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Her Majesty Queen Elizabeth II 1926 - 2022

Portrait of Seb Orton
Areas of expertise: Corporate, Equity capital markets


Seb is a partner in the corporate team, based in the London office, and has extensive experience advising both private and public companies and financial institutions. His work covers a range of corporate issues with a particular focus on IPOs, secondary fund-raisings, M&A, including public company takeovers, and assisting listed companies on corporate governance and their continuing obligations.

He has wide cross-sector experience and, over the past three years, has acted on a full range of issuer and investment bank-side transactions, from a FTSE250 Main Market IPO for a financial institution and a high profile IPO on AIM to a variety of smaller Main Market and AIM transactions in the retail and health and care sectors. The most recent of these have included the Main Market IPO of Oxford Cannabinoid Technologies Holdings plc (acting for the issuer), the AIM IPO of Parsley Box Group plc (acting for finnCap as nominated adviser and broker) and a placing and open offer for SkinBioTherapeutics plc (acting for the issuer). He was seconded to Investec's Corporate Finance Group in 2004 and Citigroup's ECM legal team in 2011 and has strong links with a variety of investment banks across the UK.

Chambers UK describes Seb as ‘a known figure in the market for AIM IPOs and secondary offerings’ and as a ‘highly experienced practitioner with a wealth of knowledge’. He is also recognised in The Legal 500 for small and mid-cap flotations. He joined Penningtons Manches Cooper in 2019 from the City office of a leading international firm. Prior to that, he was a partner in the London office of a US law firm. 

Seb is a member of Penningtons Manches Cooper’s North America group and has extensive experience working with US and Canadian companies, both listing in London and acquiring UK public companies. He is also a member of the National Institute for Health Research’s i4i Challenge Funding Committee.

Recent work highlights

  • Advising Oxford Cannabinoid Technologies Holdings plc on its initial public offering on the London Stock Exchange, which valued the company at £48 million.
  • Acting for finnCap on the IPO of Parsley Box Group on AIM, which valued the company at £83.8 million.
  • Advising finnCap and Stanford Capital on a secondary fundraising by The British Honey Company plc on AQSE in connection with British Honey’s acquisition of Union Distillers.
  • Representing SkinBioTherapeutics plc on a placing and open offer on AIM.
  • Acting for Stanford Capital and SI Capital on secondary fundraisings for ImmuPharma plc and Incanthera plc.
  • Providing advice to finnCap and Peel Hunt on a secondary fundraising for Revolution Bars Group and its transfer from the Main Market to AIM.

Penningtons Manches Cooper LLP

Penningtons Manches Cooper LLP is a limited liability partnership registered in England and Wales with registered number OC311575 and is authorised and regulated by the Solicitors Regulation Authority under number 419867.

Penningtons Manches Cooper LLP