Complex sentence: Wheatley sought funding for the film, which he had planned for years, and the film was developed and financed by Film4.0, an arm of Film4 that serves as an innovation hub.
Split into simpler sentences: Wheatley sought funding to produce the film, which he had planned for years. The film was ultimately developed and financed by Film4.0, an arm of Film4 that serves as an innovation hub.