I have traded with CMC about two years and have had generally positive experiences. One can trade nearly and stock in the world. There are a few things that I want to mention though: The JAVA-PC trading software is clunky and hard to read. Once the dealing default of a stock went from 1 to 1000 shares and I lost some money reversing it. I complained about this and they gave me 20 quid. If your English is good and you are polite (and have a valid complaint) they are helpful. The prices of UK stocks is in pence, but the prices of UK sectors is in pounds. Another 50 pound lost.