Alwyn: Complete Symphonies by LSO/Hickox. Have now been able to thoroughly preview this 3 CD set and it is a solid 5 stars (or, perhaps we should say 2 "LeftEars").
The bookend pieces of the set leave you breathless -- the first symphony (written in 1950) and the Sinfonietta for strings (in 1969). Perhaps because of his film score background, Alwyn is listenable while still being innovative. Check out his characteristic melodic style in the first movement of the Sinfonietta. The 4th movement of the 1st shows off his sophisticated contrapuntal abilities. The 3rd movement of the same has a beautiful melody reminiscent of Elgar who might be considered Alwyn's rightful mentor.
Grab the LSO Hickox set while it's still available. Reviewers keep talking about how important this composer is but he seems always relegated to a minor status. If you get just one of the symphonies, go for the first.