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
  Aston Tirrold Map BV116
SU562885
SRS diagram not yet available
S 163 Cholsey Map BX115
SU584860
SRS diagram P301
S 165 Didcot East Junction Map BS117
SU529903
SRS diagram X29
S 214 Didcot North Map BS118
SU524914
SRS diagram P3 (1957) not available (1905)
S 166 Didcot West End Map BR117
SU524906
SRS diagram L173
S 167 Foxhall Junction Map BR117
SU516909
SRS diagram L155
S 162 Goring and Streatley Map CA111
SU602806
SRS diagram B253 (1918) P301 (1960)
S 168 Milton Map BP117
SU495915
SRS diagram S923 (1942)
S 164 Moreton Cutting Map BU117
SU549892
SRS diagram P267 (1937, 1960)
  South Stoke Map BZ113
SU601834
SRS diagram not yet available
S 200 Upton and Blewbury Map BR114
SU510869
SRS diagram L3
S 174 Wallingford Map BY117
SU601894
SRS diagram S792
Prices are shown here.