Almost most of the speakers are made in china today (under the supervision of the experts). If you want KEF speaker with "Made in UK" then go for the KEF Reference line.
And, I am from India too. It would be helpful, if you could share the INDIVIDUAL price you paid for the R900, R600 and R300.
For subwoofer, I would STRONGLY recommend you to go the IMPORTING way, as ID subs are very good and they have to be imported directly from US. To name a few, Seaton Submersive, JTR Catpivator, Rhythmic sub are some GREAT SUBS.
And, Did you check the REVEL PERFORMA3 range before purchasing the KEF? They have good feedbacks too.