I am an American Registered Nurse. I am looking to do some temporary work in London. We refer to them as "travel RN's" over here. Do these agencies provide housing for you? What are the pro's and con's of working agency versus working directly for a hospital? I have 9 years of experience and my specialty is working Cardio-thoracic, open heart and heart transplant ICU, what level would I be. I saw that there are level D'd and level F's and I have no clue what that all means. Thank You!!!