More or less your options are Cooler Master products with brown keys. Trigger Z, Quickfire TK, Quickfire Rapid-i. Ducky should have white/aluminium Shine, but I am not sure exactly when they will be available ( I heard something about Shine 4 needed to be redone and they do not have any other Shine 3 stock left). Theoretically you can get the Quickfire TK in white but it is not widely available in the UK. Other than that it's pretty much only Ducky.
P.S. All the RGB ones are also an option - Corsair, Razer, Tesoro, Logitech will probably join too soon. I would not trust them to give me uniform and beautiful white though.