Because the PGS Stations were renamed, here a zip with the old ones.

from beginning until SB-Game #15 and Werkloze Desyncs, Inc. on MS (DBSet)

[newgrf]
data/planesetw_459.grf
data/dbsetxlw.grf
data/alpinew.grf
data/pb_hovs_bus.grf
data/pb_viaduct.grf
data/basic_platformsw.grf
data/harbourw_456.grf
data/jcindstaw.grf
data/newstatsw.grf
data/pgs-counw.grf
data/pgs-freiw.grf
data/pgs-silvw.grf
data/pgs-subuw.grf
data/ukwaypointsw.grf

Version 4

data/ottdc_grfpack/def/planeset/planesetw_459.grf
data/ottdc_grfpack/de/dbsetxl/dbsetxlw.grf
data/ottdc_grfpack/uk/pb_hovs_bus/pb_hovs_bus.grf
data/ottdc_grfpack/def/pb_viaduct/pb_viaduct.grf
data/ottdc_grfpack/def/basic_platforms/basic_platformsw.grf
data/ottdc_grfpack/def/harbour/harbourw_456.grf
data/ottdc_grfpack/def/jcindsta/jcindstaw.grf
data/ottdc_grfpack/def/newstats/newstatsw.grf
data/ottdc_grfpack_old_pgs/pgs-counw.grf
data/ottdc_grfpack_old_pgs/pgs-freiw.grf
data/ottdc_grfpack_old_pgs/pgs-silvw.grf
data/ottdc_grfpack_old_pgs/pgs-subuw.grf
data/ottdc_grfpack/def/ukwaypoints/ukwaypointsw.grf

after that until revision r8620 (UKRS)

[newgrf]
data/planesetw_459.grf
data/alpinew.grf
data/pb_hovs_bus.grf
data/pb_viaduct.grf
data/pb_ukrs.grf = 0 3 0
data/troprs_w.grf
data/basic_platformsw.grf
data/harbourw_456.grf
data/jcindstaw.grf
data/newstatsw.grf
data/pgs-counw.grf
data/pgs-freiw.grf
data/pgs-silvw.grf
data/pgs-subuw.grf
data/ukwaypointsw.grf
data/usstatsw.grf

From revision r8979, the GRF settings will be set automatically and are stored in the saves.