If you want one of the world's best trouser makers, such as Naples' Salvatore Ambrosi, to make for you, you have to provide the cloth. Unlike most of the suppliers to bespoke tailors and high end ready to wear clothing manufacturers, royal warrant holders J & J Minnis - John G. Hardy sell some of the best cloth of their types directly to retail customers.
On the negative side, the photos are dark and don't show detail. A 3% surcharge is added for credit cards, which I believe violates the Visa and Mastercard merchant agreements. The company doesn't respond to emails (I had an answer to one inquiry out of four). And what I dislike most is the company's insistance on sending parcels to the States by UPS. Unlike the Postal Service, UPS adds to the shipping charge an exorbitant fee for clearing the parcel through customs. But the flannel, in particular, is probably worth dealing with those irritations.