There are several ways that films can be financed. Major studios like Working Title Films primarily use pre-sales, where distribution rights are sold to studios before filming. This provides upfront funding and guarantees success by including star names and commercially viable elements. Small independent companies like Warp Films have difficulty securing large investments due to lack of star power. They often rely on government grants from sources like the UK Film Council or National Lottery to fund lower budget films focused on genres like social realism.