Jonathan Sleep

Senior Associate
Contact details

023 8085 7327

Jonathan Sleep is, without doubt, the best lawyer I have ever had the fortune to work with; in my opinion, he is a credit to the firm and the profession.

Legal 500, 2022

Jonathan is a Senior Associate in the Succession and Tax team in our Southampton Office.

Main areas of practice

Jonathan’s main areas of expertise includes dealing with and advising on:

  • The administration of high value estates, including for business owners and farmers
  • Advising on inheritance tax and capital gains tax planning
  • Preparation of Wills, bespoke to his client’s individual requirements
  • Lasting Powers of Attorney
  • Creation of Trusts
  • Care Fees Mitigation


Acting for individuals to mitigate against inheritance tax, care fees and to provide safeguards against losing mental capacity.
Jonathan advises individuals, executors, personal representatives, beneficiaries, trustees and attorneys.



Jonathan joined the firm in May 2017 having previously been the Head of Wills, Trusts and Probate Team for a major Private Client law firm in the South.

He has more than 14 years’ experience working as a Private Client Solicitor, specialising in wills and trust work, administering high net worth estates, taxation and inheritance tax planning.

Jonathan was recognised as a Rising Star in the Legal 500 2020 results.

Contact details

023 8085 7327

  • Member of the Society of Trust and Estate Practitioners
  • Member of the Association of Lifetime Lawyers (formerly Solicitors for the Elderly)
  • Member of the Law Society Private Client Section

Significant Experience

  • Jonathan's experience includes acting for executors in the administration of high net worth estates, including farms, large buy to let portfolios, foreign assets and private business companies.
  • He has extensive knowledge in dealing with disputed estates under the Inheritance (Provision for Family and Dependants) Act 1975.  


"The speed of his response to a query is impressive. His obvious professional knowledge, together with his positive, no-nonsense and proactive approach in tailoring the proposed solution has been outstanding."

Legal 500, 2022

"Senior associate Jonathon Sleep was exceptionally supportive and gave me excellent advice to guide me through a somewhat complicated situation; I was pleasantly surprised by his genuine concern for me."

Legal 500, 2020

"Jonathan Sleep explained things very clearly and concisely and was the perfect calm adjudicator, working with me to create a solution. He proved to be an excellent listener - truly kind and sympathetic."

Legal 500, 2020

"I had every confidence in senior associate Jonathon Sleep."

Legal 500, 2020

Jonathan Sleep is noted for his 'excellent legal insight and for being very good with clients'.

Legal 500, 2019

"Jonathan Sleep explained everything to us in clear detail and was always happy to clarify any queries we had, large or small and made a relatively complex process as simple as possible for us. The whole transaction with Jonathan was conducted with efficiency and kindness throughout."

Client testimonial

"My thanks for the considerable amount of skilled work that you have carried out to enable us to get to this stage. The collecting and putting together of all the financial aspects of this complicated Estate is most impressive!"

Client testimonial

"I am truly thankful and want to pass that on to you from the heart. I will not hesitate to recommend you to anyone else."

Client testimonial, Lausanne (Switzerland), Dec 2018
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