
Private Equity
Corporate
M&A
Jonathon M. Hamill is a Partner at Sidley Austin in London, specializing in private equity and financial institution transactions. With a focus on leveraged buy-outs, carve-outs, and M&A, Jonathon provides strategic advice to clients across various sectors, including financial services, real estate, and energy. Recognized by Legal 500 UK for his work in high-value private equity transactions, he has also been named a 'Rising Star' by Law.com International. Jonathon's experience includes secondments at Apollo Global Management and Goldman Sachs, enhancing his expertise in hybrid capital transactions and creative capital solutions.
Private Equity Transactions
Joint Ventures and Hybrid Investments
Asset Acquisitions and Sales
Infrastructure and Energy Investments

- Bixby Wealth Solutions made a minority investment in JH&P's existing shareholders in a transaction with an undisclosed date. - Deal value was 3000000000 Sector: Wealth Management; Location: UK. - On the acquirer side, legal advice was provided by a team including Brien Wassner, Jonathon Hamill, Aaron Rigby, Ed Perry, Fran Gray, Jagata Swaminathan, Theo Sawkins, Jason Menzies, Avi Kaye.
Nov 18 2025
3B
Private Equity

Partner
2024 – Unknown
Counsel
2023 – 2024
Senior Managing Associate
2022 – 2023
Senior Associate
2021 – 2022


- DHL acquired the target/assets from Apollo Global Management, Inc. in a merger on not available. - Deal value was 3200000000 Sector: Logistics; Location: UK. - On the acquirer side, legal counsel was not available.
May 15 2025
3B
Private Equity
Mar 3
2 min
Senior Associate
2020 – 2021
Associate
2016 – 2020
Legal Counsel (secondee)
2017 – 2017
Associate (Corporate)
2015 – 2016
Trainee Solicitor/ Associate (Corporate)
2012 – 2015