Just a short update, Swepstone's Quintet is actually for piano, flute, clarinet, horn and bassoon, and it was performed at John Parr's Chamber Music Concerts in Sheffield during the first half of Twentieth-Century. This information was made available to me by Miss Jessica Beck, PhD student at the Royal Northern College of Music. To the best of her knowledge, there are no other Quintet for piano and wind instruments by Swepstone.