RISC OSMap of G.W. SignalboxesRISC OS
http://www.svrsig.org/gwmap/GWMap.htm
Sxxxx numberSignal Box nameView on map squareOther information including SRS diagram number
  Basingstoke (G.W.) Map DK38
SU641527
SRS diagram B289
  Kings' Worthy Map DG33
SU490322
SRS diagram P74 (1943) S886 (1920)
  Lodge Bridge Map DG36
SU450428
SRS diagram S813
  Sutton Scotney Map DG35
SU465395
SRS diagram P67 (1922, 1943)
  Whitchurch Map DF37
SU460480
SRS diagram D85 (old and new boxes)
  Winchester Map DH33
SU487291
SRS diagram P104 (1922, 1943)
  Worthy Down Map DG34
SU480350
SRS diagram P74
Prices are shown here.