Coalport West, Hunnington, Presthope (no buildings there, only a platform), Meeth Halt, Cardrona, Fremington, Measham, Woolacombe and Mortehoe, Dulverton, Linley Halt, Jackfield Halt, Berrington and Longville among others. Much Wenlock might still have platforms. You've also got stations like Bideford, Instow, Torrington, Fencote Mill and Rowden that have track for cosmetic purposes that aren't served by trains.
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Surprised nobody's mentioned Welshpool's original station, alongside the bypass.
Surprisingly I forgot about that one. At least it's still standing, and in good condition!