Just read that VMG went of business a while ago .. that would explain the lack of a website.
Here are the F1 models they manufactured:
https://www.slot32.de/wbc.php?sid=15325572e586&q=vanquish&x=0&y=0&tpl=suche.html&page=3
I would buy all of them, really nice.
I also found that the store with the most VMG products is this one:
https://www.slotbazar.com/advanced_search_result.php?keywords=vanquish&sort=1a&&page=1