I would say that they do, for deliberate shunt moves- such as the examples you gave: (from Ealing Common Depot to Ealing Common EB platform & Hammersmith sidings to Hammersmith EB platform). These are definately protected by trainstops.
However, the FRL 'idiot lights' installed after the imfamous Hyde Park Corner incident, requiring FRLs at every possible 'reversal' location- do NOT have trainstops. eg. Embankment EB platform (west end), Earl's Court pfm2 (west end).
IIRC the standard states that in tunnels there must be signs on the wrong end of every platform and if trains can reasonably be expected to try and attempt the move (as happened at Kings X) it must be a light and a trainstop.