Interview Strategy Idea

What if i were to show my interviewee some photograghs/cartoon images of different people, and asked them to tell me which one is more english. Then explain why.

I would have to:

- not have already decided which is more english because i may then influence the decision.

- not create any images myself or my own notions of English people would biasly affect the products.

..Would this technique seem patronising?