Percy Whitlock's 5 Short Pieces and 4 Extemporisations are much loved pieces from the English organ literature. "Fidelis" is particularly one of my favourite pieces by Whitlock. I have recorded this piece on the Heppenheim Hauptwerk sample set from Saint Peter's Church Heppenheim in Germany. The organ was built by Wilbrand in 1997. The instrument has 43 stops on 3 manuals and pedals.
Heppenheim: https://www.inspiredacoustics.com/en/products/hep
Score: https://www.sheetmusicplus.com/title/the-complete-shorter-organ-music-sheet-music/3619550?aff_id=478282