In the U. S., Lenox porcelain, www.lenox.com, seems to have a viable company going. They have added imported lines to their casual ware. Their website does not say where the lines are imported from. Is it just a brave front?
Spode still is selling their china in both UK and North America, but at much-discounted prices.

Our special occasion dishes are Lenox (U. S.), we used the set for Christmas dinner, the first time in about three years. Our pattern is long gone from their listings, however. We started with gift place settings (bare bones) when we were married, as so many other couples have, and added pieces for several years. When our pattern was discontinued, the last additions were from the antique dealers.

Sad indeed to see the great English companies go under. We have a set of 19th c. Coalport and Spode Indian Tree pattern, part inherited and part collected through the years; with its scalloped edges easily distinguishable from their later production.

I can understand the failures; not only are times bad (but they have been many times during the long history of the companies) but young people today seem to have little interest in fine china and crystal; moreover they move around much more than we did when we started out and possessions are expensive to move or store.