As someone who tinkers with homemade amps and effects I often come across circuits that need JFETs - typically 2N5457s or J201s.  I went looking to re-stock my parts box recently and found that a number of suppliers (eg. Farnell, Maplin, RS, Rapid) were either just not stocking these things anymore or listing them as "out of stock" or "discontinued".

Have I missed something? Is this just a UK supply issue or are the big manufacturers stopping making these things?