One of the cool things that Unit-27 do is offer a body composition service combined with a meal plan service at the Muscle Bar restaurant. They have some magic, electronic scales which will work out your fat and muscle composition, then based on that and your exercise levels they put together a meal plan so you can reach your goals. The body composition service is also extremely expensive for what it is.
My goals are fat loss and building muscle so a reduced calorie diet was the order of the day, featuring porridge, omelettes and chicken breasts.
After I got diagnosed with diabetes they switched my diet up to even less calories, less than 40g of carbohydrates, made up of blueberries (which are great for diabetics) and fibrous broccoli then grilled chicken and omelettes cooked in coconut oil. Very healthy.