Now you are talking. I often buy jars of Patak's Madras and Vindaloo spice paste, or the madras paste pots. I love chicken madras, pork belly vindaloo, chicken phal, mushroom, bell pepper and onion madras, and mixed vegetable curry from Chinese takeaways (sorry, but I don't trust the meat from them).
I buy frozen blocks of mayflower Chinese-style curry sauce from my local Heron Foods store (227g for £0.85p). Just add what you like to it, or even just the curry sauce on chips, and it will taste just like something you get from a Chinese takeaway.