I think it might be something to do with the prevelance of American sci-fi and fantasy and other geek sources, actually. Because while Indian Hindus are quite a visible ethnic minority in most parts of the UK. I think there isn't to the same extent an (Asian) Indian American identity, in the same way there's a British Indian identity, perhaps because Britain and India have a shared past, in a way that America and India don't? And I do notice a lack of Indian-Asian faces in my sci-fi, and I have to admit I often see it as American-centricness, because they don't even have to be tokenistic about other nations ethnic minorities... Mebbe that's just me putting my white face back in the centre of the picture again, though *g*

And you do get a not unreasonable number of jewish dyke-geeks in your sci-fi (Willow from Buffy, Ivanova from BS9 and that's just off the top of my head), but I've always seen that as fairly American-centric as well - Jews are a big part of the American Experience in a way we're not so much here in England. They're not east-end Jewish-geek-dykes, and that's a completely different set of cultural experiences.....

And just about my oldest geek-friends were Indian Hindu, for what it's worth. I'm just sorry I'm not in touch with any of them anymore.