Nobody. Matter o' fact, there's nobody in England besides Ledger that gets Ledger colors.
You can call J. Gillette at classic guns inc. in Illinois and talk with him about the style you want, he might be able to come close, but don't expect the colors or mottling to be exactly like Ledgers.
http://www.classicgunsinc.comIs it a newer double rifle that would've been originally equipped with Ledger colors? If not, it'll be fine with an English style of case colors, lots of blues, straw, etc. English guns normally didn't have the pinks and orange colors Euro and American guns (think lc smith) sometimes have.