Surround Factory is a French business founded in 2010 by sound to picture professionals working in the film and tv industry. It was created to promote real surround sound recordings to be used by top notch professionals in the worlds of cinema, HD TV, video games, event creation, institutional, and educational films, amongst other areas.
They offer quite a few ambisonics B-format recordings. After the demise of ambisonia.net and soundofspace.com, this is one of a very few services I know of that are making B-format recordings publicly available.
