![](https://www.celtic-renewables.com/wp-content/smush-webp/2024/05/20240216_CelticRenewables_035-scaled.jpg.webp)
People
Our team at Celtic Renewables is composed of over 60 employees, including experienced executives, engineers, and scientists. Each member is a specialist in their field, contributing their expertise to our mission.
Executive Team
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Brett-Simpson-420x420.jpg)
Brett Simpson
- Executive Chairman
![](https://www.celtic-renewables.com/wp-content/uploads/2024/04/Mark-Simmers-CEO-420x420.jpg)
Mark Simmers
- Chief Executive Officer
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Donal-420x420.jpg)
Donal Fullerton
- Chief Financial Officer
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Jim-G-420x420.jpg)
Jim Gibson
- Chief Operations Officer
![](https://www.celtic-renewables.com/wp-content/uploads/2024/04/d50bf8bdf71933f3280b98798717c5fb-420x420.jpeg)
Kerry Johnson
- Head of People
Senior Leadership Team
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Duncan-420x420.jpg)
Duncan McLachlan
- Commercial Manager
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Lorna-420x420.jpg)
Lorna Woodcock
- Head of Technical
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Martin-420x420.jpg)
Prof. Martin Tangney OBE
- Founder & Scientific Advisor
![](https://www.celtic-renewables.com/wp-content/uploads/2024/05/Daniel-420x420.jpg)
Daniel Borisewitz
- Head of Engineering & Projects
![](https://www.celtic-renewables.com/wp-content/smush-webp/2024/05/Jim-P-420x420.jpg.webp)
Jim Purves
- Head of Corporate Operations
Our Team
The team at Celtic Renewables
At Celtic Renewables, our dedicated and talented team is at the heart of everything we do. Each member plays a crucial role in our vision, to establish a world where sustainable, biologically derived, green chemicals, produced in harmony with planet earth replace our dependence on fossil-fuel equivalents.
![](https://www.celtic-renewables.com/wp-content/smush-webp/2024/05/Team-away-day-1024x768.jpg.webp)