We were recommended to Focused Nutrition from one of their existing clients, because of the way they look after customers.
We were walked through our idea, and it was clarified with our aims and what works in the formulation process for the guys themselves. After a couple of reasonably priced trials, we were very close to what we had in mind at the outset. They have a lot of the technical stuff covered in house which is great for us, and some great support services they introduced us to take care of the marketing side of things.