I emailed them out of interest and got the following response.
Hi,
I'm now away on holiday until 14th August. Production continues, and
sales can be placed on the website or with staff at the workshop.
Thanks for contacting GTS. We aim to respond within 6 hours.
If you need to contact GTS then please call the workshop on 01474
707071
Kind regards,
Darren George
GTS Tuning
Maybe he didn't come back yet, who knows?