2003 Archive 
A site run by Dennis Lowe has posted 2 very interesting video interviews on Ian Wingrove who worked on such shows as Thunderbirds in the speciall effects workshop.
As I cannot provide a direct link, I will provide the main site link which shows the main interview. You can look at the 6th and 7th articles which feature Ian Wingrove. I believe the main interview (45 mins) is conducted by David Sisson, well known model maker.
The second video is a summary of his work and includes mention of Thunderbirds and Stingray.
Dennis' site also has a lot of other very interesting videos, especially a series from ALIEN and ALIENS, including rare photos. Definitely worth a visit!