James Gunn-Carter
Owner and technician
Automotive engineering degree, twenty-four years of water-cooled Porsche. Does the diagnosis, does the work, signs the sheet. If you have spoken to someone about your car here, it was almost certainly him.
jgcporsche.co.uk/my-porsche
The evolution of JGC Porsche
- 2012 One ramp, one bay
- 2015 New facility
- 2016 James starts racing a 986 Boxster
- 2019 Second ramp
- 2024 PIWIS 4
- 2025 The 997.1 GT3 arrives
- 2026 Members portal
JGC Porsche is one of those names that keeps coming up if you spend any time around Porsche owners in the UK. Tucked away near Silverstone, it’s not a flashy, over-commercialised operation. It’s something else entirely: a proper specialist workshop built on experience, attention to detail, and doing things the right way.
Founded in 2012, JGC Porsche has grown steadily over the years. Not overnight, not by cutting corners, but by building a reputation that Porsche owners trust, on the back of 24 years James has spent working on Porsche.
Read the reviews → 
Ursula Gunn-Carter
Operations
Runs JGC alongside James, overseeing everything from bookings and parts supply to planning the week ahead, ensuring every Porsche gets the attention it deserves. That’s why all work is booked in advance by appointment.
Ruan Marchand
Apprentice
Ruan has been part of the JGC Porsche team for over three years and has quickly established himself as a naturally gifted mechanic with a genuine passion for all things automotive. His enthusiasm started early, having purchased his first car at just 14 years old.
Turbo
Workshop mascot
Meet Turbo, JGC’s very own little speed machine! A whippet with the name of a Porsche legend, he’s much more interested in making friends than chasing lap times and is always ready to give you a warm welcome.