According to
the Altarus Records news page, Sorabji's
Concerto per suonare da me solo is receiving/has received its premiere recording. (Written 1946, first performed publicly by Yonty Solomon in 1978.)
The only time to date I've ordered from Records International is to get Altarus' recording of Sorabji's second piano sonata (an earlier, less characteristic work, somewhat longer- though still only about an hour, unlike some works of his - but lacking his greater feeling for form in later works, I think... still, enjoyable.)