This looks interesting (https://www.prestomusic.com/classical/products/9425902--british-cello-works-vol-2) - cello sonatas, some well-known (Britten, Delius), or at least a few times recorded (Smyth), one fairly new to recording (Cecil Armstrong Gibbs' sonata in E minor, Op.132, composed 12 January 1951 (https://www.armstronggibbs.com/catalogue-of-compositions/1951-2/) - knowing Gibbs' music, very likely to be inside our remit).