>>One way to do this might be to use data grouping on the not-to-be-repeated value. Create a report variable that resets on this group - using count - and only print when this variable = 1.
>
>I was halfway there with creation of variable and didn't get to the point of creating the new data group. Thanks for your help.

It always will try to print the first record in the group and doesn't take in account other Print When conditions.