Multitude of Voyces are compiling an anthology of liturgical music composed by women.
There’s an article in the Church Times about it, complete with an appeal for scores that are “free of copyright”. I’m not sure whether that includes Creative Commons works, or whether the anthology will interface with the Christian Copyright Licensing Initiative, or what; but it sounds to me like the aim is to get music sung and played, without high costs for the churches that use it. It’s definitely worth asking for more detail!
Scores can be emailed to firstname.lastname@example.org, or posted to Multitude of Voyces, 7 New Street, Salisbury, SP1 2PH.