Hi Riche
From what I understand your training would be with other successful candidates from India here in the UK. If there are not sufficient positions to warrant a whole course for you guys then you would join a course of UK based new starters. You most certainly would not be alone though. There would be others from your country too.
To get to work in Upper Class depends on how may Senior Cabin Crew are required. I would hazard a guess that it could happen after 18 months to 2 years. Promotion is performance related as every flight you are assessed by your relevant CSS onboard.
I hope that helps and good luck.
