A large fire has broken out in a block of flats in West Hampstead, London, this morning. <br /><br />In the clip, a raging fire and large black smoke is seen coming from the residential building that is next to a station. <br /><br />"Everything was happening so quickly. The fire crews arrived very quickly within five minutes," says the filmer online.<br /><br />Six fire engines have been called to the scene that broke out at 11.30am.