The album I want is here:
Chandos claims that one can purchase downloadable tracks from their theclassicalshop.net shopping-cart web site (The Classical Shop is a division of Chandos Records Ltd). So for the Wm. Walton album, here is the product page Chandos links to:
The note at the bottom of the page says:
Bit Rate: 24 Bit / 96K (Lossless)
More about their download formats here:
Has anyone purchased 24-Bit/96K (Lossless) tracks (or albums) from The Classical Shop? If so, how's their service?
Total price for the Walton album is £9.99 ($15.48) -- a bit pricey for a download album, 24/96 or not. The album artwork is free in PDF.