I do use it as part of mixed powder Phil but I also use it whenever a recipe calls for a curry powder. The recipe I use for Masala Shrimp says to use either Garam Masala or curry powder. I actually prefer it made using 50/50. When I make curried sausages I use this or Clive of India or I mix the two. Curried egg for sandwiches. A touch of curry powder can be used to add a little extra to many things, even a roast chicken sprinkled with a mix of curry powder and chicken seasoning. My wife always puts a little in her winter pumpkin soup. Chinese curry prawns and rice. Recently I found out about British takeaway curry sauce for chips so I'll be giving this nasty stuff a test soon.
I also use it to do quick pre-cooked chicken instead of the elaborate methods described. Water, some base gravy and a tablespoon of curry powder. I actually have about 5 or 6 (or more) different curry powders. Clive, Mother's, Nirapara, Kitchen King, my own home made mild Madras and a couple of others.