Would it have been possible for a British prisoner of war to have gotten sent to a concentration camp?

When I say concentration camp I mean a camp where Jews were held also- like Bergen or Auschwitz. I know that the Germans might have has separate camps for pows, but would it have been just a bit possible that a British pow could have ended up in one of these camps during the war, before liberation? Please answer quickly- I really need to know. Thanks!