Yes my Kodachrome used to be processed in Hemel Hempstead in the UK, then it was collected at the Hemel Hempstead address and sent to Switzerland for processing, then finally it went to America. Now it is no longer made, and I haven't found an acceptable alternative: Fujichrome is OK, but it's not as good as Kodachrome 64.
PS I made a typo in my last post: I intended to say that "it wouldn't surprise me if Ilford were in a similar position".