A top quality translation makes all the difference

I offer you a proven range of specialist translation and editing services. My clients include academics, clinicians and medical and pharmaceutical corporations from across the globe.

These clients rely on me to localise their research papers and business communications successfully. Clients hire me to translate from Spanish to English, and from French to English. Their end readers cover everybody from unqualified laymen to leading industry figures. I can write clearly and effectively for any groups or publications you need to target.

Professional and results-focused approach

My reputation is built on my professional and results-focused approach. If you’d like to discover exactly what I can offer you, please get in touch today.
I’ll be happy to provide samples of my work and a free quote.

Brett Thomas
Head of Sales at InTechOpen

I attended Jason’s excellent (2 x 1 hour) webinars, organised by eCPD and the Chartered Institute of Linguists. Jason provided a comprehensive overview of how to get started as a freelance medical translator with bucketloads of advice, tips and the occasional anecdote. He is an engaging presenter and spoke with clarity, wisdom and patience. I would have no compunction about recommending him for similar activities.

Nathalie Esch
Freelance Translator

I recently attended Jason’s two-part webinar on “Get a good start in medical translation”. Both sessions were really informative and interesting: Jason provided great resources for marketing, CPD, and references to use while translating medical documents. The webinars were interactive, left enough time for questions and provided a great basis for starting off/furthering a career in medical translation. I would highly recommend any further webinars offered by him.

Matthew Walker
Freelance Translator

I have found Jason’s webinars extremely informative, motivating and insightful. He has given me plenty of practical advice which I can act on now, while also establishing more long-term goals. The sessions were well-presented and there was a clear line of development over the entire course. Jason is also always more than willing to offer advice and share his wealth of experience at Translation events and conferences. I look forward to learning more from him in the future.

Jonny Cullen
Writer & Strategist

n short, I cannot recommend Jason highly enough. Recently I hired his company to translate an important business document from English into French for me. The standard of both the translation itself and the customer service provided were superb. Jason kept me fully updated before and during my project, and there is no doubt that I will be using his services again soon. 10/10.



En Ching Fung

Jason is a reliable guy and someone you can always count on ever since I have known him from Bristol. Always conscientious, always taking great pride in all that he does. Approachable guy with a can-do attitude. Keep it up, Jason!


Lidia García Pérez
Healthcare Technology Evaluation Technician

I have often used Jason’s translator or edition service for texts in English. The outcome has always been satisfactory in terms of both time and form. Specifically I hired him to translator texts about cost-effectiveness and systematic review of healthcare technologies, whereby I unreservedly recommend his services for this kind of text.


Adrianna Tryskuc
Project Manager

Very effective, fast and high-quality correction of specialised documents (EU proposals in health and engineering areas). Highly recommended.

Beatriz Sanz Baticon
Teacher, London

Thank you very much. You offer a very fast and professional service, exactly what I needed. I also have to add that the service is economical as well. I will recommend you if anybody asks me and I will hold onto your number in case I need you again.

Steven Kerr
Steven Kerr International Business Development Consultant specialised in Crossborder Reproductive Care

I had the pleasure of collaborating with Jason recently on a fairly large medical/legal translation project. I found him to be professional, on point and on budget. He met the deadline with ease and I would thoroughly recommend his services. I expect to be working with him in the future.

José Antonio Martínez
Neonatologist. Department of Paediatrics, Hospital Universitario Puerta de Hierro.

Our group has used Jason WillisLee’s scientific text editing and proofreading services on several occasions. Jason’s work is excellent: professional and fast, he does not just limit himself to merely correcting the grammar, he also offers valuable suggestions on the scientific syntax and structure of the text. To date, his work has saved us the annoying comments from revisers on the quality of the English of our texts. Furthermore, the prices that Jason offers are highly competitive, especially when compared to the service of some publishers. Highly recommendable.

Lucia Campestrin Steele
Operations and Development Manager at Wichtig International Ltd

Jason has collaborated with our Wichtig publishing for several years and across several disciplines in the biomedical field. He has always proved a highly skilled and reliable colleague, constantly contributing to the improvement of articles published in our journal portfolio. He is very friendly and a great pleasure to work with.

Paloma López de la Osa Escribano
Editor at CTO Editorial

Jason Willis-Lee is an effective and serious worker. He is flexible and adapts to the working needs. It has been great to discover him!