No products returned from SKProductsRequest

This is my first attempt at this and am falling at the get a list of products hurdle!

I have created a ad-hoc profile like: com.mycompany.myproduct and a additional feature on iTunes connect like com.mycompany.myproduct.feature.

The feature is linked to an existing app already on the store but not yet live with in app purchase that uses com.mycompany.myprod as its identifier.

I have build the new version using com.mycompany.myproduct and deployed to my phone and it works ok, apart from when I try to retrieve the list of products available (there is one setup on iTunes connect) I get a return count of 0

Am not sure where I am going wrong so would really appreciate some advice....

Thanks