+44 (0)7843 515709 conveyancing@grabauinternational.com

About Us


Grabau International’s Conveyancing Division is headed by the hugely experienced marine legal specialist Jonathan Hadley-Piggin*. Aside from his work with us Jonathan is also a practicing solicitor and partner in renowned City of London law firm Keystone Law. In that capacity, Jonathan routinely advises marine businesses, crew and other leisure marine operators such as yacht management companies and marina owners as well as assisting banks and private individuals in the yacht and superyacht industry.

Jonathan lectures regularly and is an examiner on the MCA Master Yachts course for aspiring superyacht captains. He is a regular speaker at events in the UK and overseas where he provides seminars for the British Marine (BM), the Maritime Training Academy (MTA) and the International Institute of Marine Surveyors (IIMS) and has written a number of diploma publications for the MTA and for the MCA Master Yachts course.

Prior to becoming a lawyer, Jonathan spent twelve years at sea, firstly as a deck officer with BP Shipping and then as a nuclear submarine officer in the Royal Navy. Following his qualification as a lawyer with Stephenson Harwood, Jonathan went on to set up yachting departments and hold partnerships with established marine specialist law firms including Shoosmith and Lester Aldridge (LA Marine).


  • Member of the Professional Yachtsmen Association (PYA)

  • Member of the Royal Institute of Navigation (MRIN)

  • Member of the Nautical Institute (MNI)

  • Associate Member of the Chartered Institute of Arbitrators (ACI Arb)

  • Member of British Marine and Superyacht UK

  • Member of the Yacht Brokers, Designers and Surveyors Association (YBDSA)

  • Liveryman and Freeman of the City of London

  • Member of the International Superyacht Society

  • BSc (Hons) Maritime Law and Economics

  • MA Maritime History

  • PG Dip Law

  • Currently PhD researcher in law.


  • “Jonathan Hadley-Piggin is a fantastic professional that greatly assists us in all endeavours. His expertise is unparalleled and he has become a trusted associate.” – The Legal 500 2021

  • “He is always available, he has a great knowledge of the marine industry and is very professional. He has an extensive understanding of domestic and international yachting.” – Chambers High Net Worth 2020

  • “Jonathan Hadley-Piggin advises owners, buyers and banks in the superyacht sector, as well as charter and management companies in the marine leisure industry. Clients highlight his “clear advice” and “excellent response times”. – Chambers UK 2016

Please note – Grabau International (Jonathan Hadley-Piggin) provides conveyancing services only. For other formal legal guidance, opinions, or representations, such services that can be provided via Keystone Law, please contact Jonathan for further information.