Signal Box Diagram Amendments

Amendments since publication of CDs

As at the end of July 2011, some 87 GW & SR diagrams have been redrawn since the CDs were published and a full-resolution image of each of these diagrams is published on an update CD. For convenience, amendments to the published CDs, already made available via the Society's web site, are also included on the CD up to and including the end of July 2011. Recently digitised diagrams include fourteen boxes in the Birmingham area and sixteen boxes in Wales as well as ten hand-drawn locking sketches in the Chester area dating from circa 1913: these are published for the first time on the CD.

The CD also contains the Company Lists of Box Diagrams - GWR, SR, LMS & LNER - held by the Drawing Office. Over 2300 drawings are currently held in digitised form, many contain more than one diagram. Each list provides access to a 'thumbnail' image of each box diagram held by the Drawing Office: over 3500 low resolution thumbnail images are thus included on the CD. A complete list of the amended box diagrams included in full on the CD is as follows:

Further drawings have been added to the collection since publication of the update CD: these are shown in red and may be downloaded from this site.

List of amendments to CD #3 G.W. Sections G, R and S - Gloucester, Worcester and Birmingham

Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
G4 S2248Rotherwas Jcn
 S2248/1———Amendment state page
 S2248/2———Hand-drawn box diagram
———Hand-drawn box diagram
 S2248/3———Mechanical locking tableAmended
 S2248/4———Detection table
 S2248/5———Electrical control table
 S2248/6———Dog chart
 S2248/7———Lever leadsAmended
G7 S2560Cheltenham Spa Malvern Road WestDrawing P385 (c. 1960) added
G7 S2561Cheltenham Spa Malvern Road EastDrawing P385 (1960) added, replacing B282 (redrawn)
G8 S2447Stow-on-the-WoldBox diagram P378 added
G8 S2446Bourton on the WaterBox diagram P378 added
 S2446/1———Amendment state
 S2446/3———Mechanical locking table
G8 S2445NotgroveBox diagram P378 added
 S2445/1———Amendment state
 S2445/3———Mechanical locking table
G9 S2563Cheltenham St JamesDrawing P385 (c. 1956) added
R1 S2732Bletchington† Drawing P400 replaces diagram B19
 S2732/1———Amendment state
 S2732/3———Mechanical locking table
R1 S2760Warwick Avon Bridge(unchanged, box diagram W57/23 withdrawn for redrawing)
R1 S2763Budbrooke
 S2763/1———Amendment state
 S2763/3———Mechanical locking table† Added
R1 T3621Olton
 T3621/2———Locking sketch† Added
 T3621/3———Mechanical locking table† Added
R1 S2833Hockley South† Newly drawn drawing B41
R1 S2834Hockley North† Newly drawn drawing B42
R1 S2835Soho & Winson Green† Newly drawn drawing B43
R1 S2836Queens Head† Newly drawn drawing B44
R1 S2837Handsworth & Smethwick Station† Newly drawn drawing B45
R1 S2839West Bromwich† Newly drawn drawing B47
R1 S2842Wednesbury Central South† Newly drawn drawing B50
 S2842/1———Amendment state† Added
 S2842/3———Mechanical locking table† Added
 S2842/7———Lever leades
R1 S2844Wednesbury Central North† Newly drawn drawing B51
R1 S2845Bilston Central† Newly drawn drawing B52
R1 S2846Priestfield Junction† Newly drawn drawing B60
R1 S2847Stow Heath† Newly drawn drawing B61
R1 S2852Stafford Road Junction† Newly drawn drawing B65
R1 S2853Oxley Sidings South† Newly drawn drawing P236
R1 S2858Codsall
 S2858/2———Locking sketchcirca 1913 locking sketch added
R1 S2859Albrighton
 S2859/2———Locking sketchcirca 1913 locking sketch added
R1 T3613Cosford Siding
 T3613/2———Locking sketchcirca 1913 locking sketch added
R1 T3612Ruckley Siding
 T3612/2———Locking sketchcirca 1913 locking sketch added
R1 S2861Shifnal
 S2861/2———Locking sketchcirca 1913 locking sketch added
R1 T3611Lawton Sidings, Shifnal
 T3611/2———Locking sketchcirca 1913 locking sketch added
R1 S2863HollinswoodBox diagram B7 added
 S2863/2———Locking sketchcirca 1913 locking sketch added
R1 S2864Oakengates
 S2864/2———Locking sketchcirca 1913 locking sketch added
R1 S2866Ketley Jcn
 S2866/2———Locking sketchcirca 1913 locking sketch added
R1 T3616Haybridge Sidings
 T3616/3———Locking sketch† circa 1913 locking sketch added
R11 S2915Dudley South† Newly drawn drawing P244
R16 T3601Madeley Court
 T3601/2———Locking sketchcirca 1913 locking sketch added
R17 S3025Much Wenlock
 S3025/2———Locking sketch† circa 1913 locking sketch added, also Bradley Sidings
R17 T3609Presthope
 T3609/2———Locking sketchcirca 1913 locking sketch added
R18 S2874Ketley
 S2874/2———Locking sketchcirca 1913 locking sketch added
R18 S2880Lightmoor Jcn
 S2880/2———Locking sketchcirca 1913 locking sketch added
R18 T3608Coalbrookdale
 T3608/2———Locking sketchcirca 1913 locking sketch added
S1 T2018Aston MagnaBox diagram (D253 ¶) added
S1 S2579BlockleyBox diagram (D253 ¶) added
S1 S2595Worcester Shrub Hill Station¶ Drawing S870 added (Road Crossing)
S1 S2243Shelwick Jcn
 S2243/1———Record of amendmentsAmended
 S2243/3———Mechanical locking table
S3 S234Yarnton Junction
 S234/7———Lever leads† added
S7 T2010Stoke Works Junction† Drawing L252 added
S9 S2643Stourport-on-Severn (North)† Newly drawn drawing B55
S9 T3614Burnt Mill Junction
 T3614/2———Locking sketchcirca 1913 locking sketch added
S9 S2955Sutton Bridge Jcn.
 S2955/1———Record of amendments
 S2955/2———Locking sketch
 S2955/3———Mechanical locking table
 S2955/7———Lever leadsAmended
S10 S2977Woofferton Jcn.
 S2977/1———Amendment state pageAmended
 S2977/3———Mechanical locking table
 S2977/7———Lever leads
X6 S2558Berkeley Loop Jcn
 S2558/1———Record of amendments
 S2558/3———Mechanical locking tableAdded
X6 S2556Sharpness South
 S2556/1———Record of amendmentsAdded
X6 S2554Sharpness Station
 S2554/1———Record of amendmentsAdded
 S2554/3———Mechanical locking table
 S2554/7———Lever leadsAdded
X6 S2552Severn Bridge
 S2552/1———Record of amendmentsAdded
X6 S2548Lydney Engine Shed
 S2548/1———Record of amendmentsAdded
X6 S2544Tufts Jcn.
 S2544/1———Record of amendments
 S2544/3———Mechanical locking tableAdded
 S2544/7———Lever leads
X6 T3610Parkend
 T3610/3———Mechanical locking tableAdded
 S2447/1———Amendment state
 S2447/3———Mechanical locking table† Amended

List of amendments to CD #4 SR Sections M, N & R - LSWR Waterloo to Salisbury

Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
M1 R276Surbiton¶ Drawing P238 added
M1 R312Walton-on-Thames¶ Drawing B162 added
N4 R250Shalford Junction¶ Drawing number J27 should read J25
N8 R9Alresford† Drawing D369 added
N8 R154Itchen Abbas† Drawing D369 added
R10 R55Brentford Central¶ Drawing B161 added

List of amendments to CD #5 GW Section A - London Division

Amendments subsequent to publication of update CD (August 2011) shown thus (§)
Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
A1 S8Ladbroke Grove¶ Drawing C31 (1962) added
A1 S18HanwellBox diagram (L247 ¶) added
 S18/1———Amendment state
A1 S29West Drayton [& Yiewsley] East
 S29/1———Amendment state† Added
 S29/7———Lever leads
A1 S148Twyford WestDrawing L248 (c. 1897) added
A1 S165Didcot East Junction§ Drawing X68 added
A3 S215Appleford CrossingDrawing W3/10 renumbered D603
A3 T3028NunehamDiagram D603 added, replacing S150
A3 S232KidlingtonDrawing P390 added
A3 S226Oxford NorthDrawings B10 and B59 paired as P410
A3 S2731Bletchington Cement Sdgs† Drawing P400 replaces diagram S918
A3 S2732Bletchington† Drawing P400 replaces diagram B19
 S2732/1———Amendment state
 S2732/3———Mechanical locking table
A9 S74Princes Risborough South
 S74/1———Amendment state† Added
 S74/3———Mechanical locking table
 S74/7———Lever leads
A9 S75Princes Risborough (North)
 S75/1———Amendment state† Added
 S75/7———Lever leads
A14 S170CookhamDrawing W6/08 renumbered D600
A14 S118Bourne End (1956)Drawing S856 renumbered D600
A15 T3093WargraveDrawing S513 added
A29 S120MarlowDrawing D600 added, replacing S512
X2 S48Lillie Bridge Sidings
 S48/1———Amendment stateAdded
 S48/12———Box diagram
X2 S51Kensington South Main
 S51/1———Amendment stateAdded
 S51/2———Hand-drawn box diagram
 S51/3———Mechanical locking table
 S51/7———Lever leads
 S51/12———Box diagram

List of amendments to CD #6 GW Section B - Bristol Division

Amendments subsequent to publication of update CD (August 2011) shown thus (§)
Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
B1 T3032Wootton Bassett InclineDrawing S928 (old box) renumbered as D543. Drawing D543 (1952) added, replacing S951
B1 T3033Farleigh DownDrawing W9/34 renumbered D601
B1 S577SaltfordDrawing W10/06 renumbered D601
B1 S580Fox's WoodDrawing W10/09 renumbered D601
B1 S583Bristol East Depot Down YardBox diagram S907 added
 S583/3———Mechanical locking table
B1 S657Bristol (Temple Meads) Loco YardBox diagram S908 added
 S657/1———Amendment state
 S657/3———Mechanical locking table
B1 S719Huntspill
 S719/1———Record of amendments† Added
 S719/3———Mechanical locking table† Added
 S719/5———Electrical control table† Added
 S719/7———Lever leads† Added
B4 S618Stapleton RoadBox diagram X31 added
 S618/1———Record of amendments
 S618/3———Mechanical locking table
 S618/7———Lever leads
B17 S384DevizesDrawing D518 added, replacing S505
 S384/1———Record of amendments
 S384/7———Lever leads
B17 S386SeendDrawing D518 added, replacing S507
 S386/3———Mechanical locking table
B18 S492Clutton¶ Drawing number D473 should read D493
B18 S493Hallatrow¶ Drawing number D473 should read D493
B25 S420Lodge HillDrawing S139 added
 S420/1———Record of amendments
B25 S428Congresbury§ Drawing S428 amended to earlier layout
X3 S634Ashley Hill Jcn.
 S634/1———Record of amendmentsAdded
X3 S636Clifton Down
 S636/1———Record of amendmentsAdded
X8 S2448Withington [Glos.]
 S2448/3———Mechanical locking tableAdded
X8 T3066Chedworth
 T3066/3———Mechanical locking tableAdded
X8 S2449Foss Cross
 S2449/3———Mechanical locking tableAdded
 S2449/7———Lever leadsAdded
X8 S349Cirencester (Watermoor)
 S349/1———Record of amendmentsAdded
X8 S350South Cerney
 S350/1———Record of amendmentsAdded
 S350/7———Lever leadsAdded
X8 S354Swindon Town 'A'
 S354/3———Mechanical locking tableAdded
X8 S355Swindon Town 'B'
 S355/3———Mechanical locking tableAdded
 S355/7———Lever leadsAdded
X8 S356Chiseldon
 S356/2———Locking sketchAdded
 S356/3———Mechanical locking tableAdded
 S356/7———Lever leadsAdded
X8 S357Ogbourne
 S357/1———Record of amendmentsAdded
 S357/7———Lever leadsAdded
X8 S358Marlborough [MSW]
 S358/1———Record of amendmentsAdded
 S358/7———Lever leadsAdded
X8 S359Savernake High Level
 S359/1———Record of amendmentsAdded
 S359/3———Mechanical locking tableAdded
X8 S360Wolfhall Junction [MSW]
 S360/1———Record of amendmentsAdded
 S360/3———Mechanical locking tableAdded
 S360/7———Lever leadsAdded
X8 S362Collingbourne
 S362/3———Mechanical locking tableAdded
X8 S366Weyhill
 S366/1———Record of amendmentsAdded
 S366/3———Mechanical locking tableAdded
X9 S364Perham
 S364/1———Record of amendmentsAdded
X9 S365Tidworth
 S365/1———Record of amendmentsAdded

List of amendments to CD #7 GW/LSWR West of England

Amendments subsequent to publication of update CD (August 2011) shown thus (§)
Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
E1 S735Norton Fitzwarren Junction§ Drawing P130 added
E8 T3130Stogumber¶ Drawing P279 added
E8 T3131Watchet¶ Drawing X28 added
F1 S952Devonport Jcn§ Diagram S142 added, replacing W23/192
F1 S1059Lostwithiel Crossing
 S1059/1———Amendment state† Added
 S1059/3———Mechanical locking table
 S1059/7———Lever leads
Q22 S994Plymstock¶ Drawing S346 added

List of amendments to CD #8 G.W. Sections H to Q - South Wales

Amendments subsequent to publication of update CD (August 2011) shown thus (§)
Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
H1 S1220Magor (1935)Drawing S942 renumbered D604
H1 T3576Bishton Crossing (1910)Drawing S841 renumbered D604
H1 S1228Newport East† Newly drawn drawing P404
H1 S1229Newport West† Drawing L118 redrawn to c. 1950
H1 S1513Llanharan East(unchanged, box diagram D351 withdrawn for redrawing)
H1 S1514Llanharan West(unchanged, box diagram D351 withdrawn for redrawing)
H1 S2039Llanelly Old Castle Crossing (1900, c. 1926)Drawings W34/352 and W34/353 paired as D606
J6 S1292Branches Fork Junction† Newly drawn drawing S137
J12 S1334Aberbeeg Junction† Newly drawn drawing L253 (1910)
J12 S1333Aberbeeg South† Drawing D307 redrawn
J12 S1331Llanhilleth Middle† Drawing L66 redrawn (c. 1952)
J13 S1340Waunllwyd North† Drawing D200 redrawn
J13 S1339Waunllwyd South† Drawing D200 redrawn
J13 S1338Cwm Station† Paired - drawing P398 replaces S814
J13 S1337Cwm Colliery South† Paired - drawing P398 replaces B385
J18 S1379Colliers Arms† Drawing D354 redrawn - Down Distant added
J18 S1378Rhiw Syr Daffyd† Drawing D354 redrawn
M1 S1848Hafod JunctionDrawing W43/05 renumbered D602
M1 S1846Swansea Loop EastDrawing W43/06 renumbered D602
M15 S2066Crundale Crossing¶ Drawing P38 added
M15 S2067Haverfordwest Station (1938, 1939)Drawings B4 and B12 paired as P411
P1 S1370Trethomas§ Diagram S157 added
P1 S1368Machen Station§ Diagram D414 added
P1 S1366Machen South§ Diagram D414 added
P8 S1566Wenvoe† Newly drawn drawing B16
P8 S1565Cadoxton North† Newly drawn drawing P402
P13 S1548Aberthaw (East)† Newly drawn drawing P401
P13 S1549Aberthaw West† Newly drawn drawing P401
P24 S1438Whitchurch (Glam.)† Newly drawn drawing P399
P24 S1437Birchgrove† Newly drawn drawing P399
P27 S1465North East Junction† Drawing L64 redrawn - minor correction 'From'
Q6 S1839Port Tennant (East)¶ Drawing S398 added
Q10 S1949Ystradgynlais† Newly drawn drawing S515
T2 S1251Pontypool Road East Junction† Newly drawn drawing B14 (1910)
T2 S1251Pontypool Road East Junction† Newly drawn drawing P403
T2 S1250Panteg Junction† Newly drawn drawing B25 (c. 1953)

List of amendments to CD #9 G.W. Sections T, U & W - North & West, Cambrian & Shrewsbury area

Amendments subsequent to publication of update CD (August 2011) shown thus (§)
Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
T1 S2955Sutton Bridge Jcn.
 S2955/1———Record of amendments
 S2955/2———Locking sketch
 S2955/3———Mechanical locking table
 S2955/7———Lever leadsAmended
T1 S2977Woofferton Jcn.
 S2977/1———Amendment state pageAmended
 S2977/3———Mechanical locking table
 S2977/7———Lever leads
T1 S2243Shelwick Jcn
 S2243/1———Record of amendmentsAmended
 S2243/3———Mechanical locking table
T1 S2248Rotherwas Jcn
 S2248/1———Amendment state page
 S2248/2———Hand-drawn box diagram
———Hand-drawn box diagram
 S2248/3———Mechanical locking tableAmended
 S2248/4———Detection table
 S2248/5———Electrical control table
 S2248/6———Dog chart
 S2248/7———Lever leadsAmended
T1 S2267Ford Bridge§ Drawing S140 added
T2 S1251Pontypool Road East Junction† Newly drawn drawing B14 (1910)
T2 S1251Pontypool Road East Junction† Newly drawn drawing P403
T2 S1250Panteg Junction† Newly drawn drawing B25 (c. 1953)
T3 S2273Kingsland¶ Drawing W56/01 renumbered as D605
T3 S2275Pembridge¶ Drawing S131 renumbered as D605
U1 S3134Montgomery† Drawing S938 added
U1 S3135Abermule (North)¶ Drawing P370 added
U1 S3138Newtown (South)¶ Drawing P370 added
U1 S3156Borth† Newly drawn drawing D585
U1 S3160Bow Street† Drawing D555 added
U1 S3161Llanbadarn Crossing† Drawing D555 added
U5 T3352Builth Road South¶ Drawing S155 added
W1 S2953Severn Bridge Junction (c. 1945)† Newly drawn drawing P233 (c. 1945)
W1 S3004Whitehurst † circa 1913 locking sketch, newly acquired
W1 S3012Croes Newydd South Fork † circa 1913 locking sketch, newly acquired
W1 T3349Wrexham Colliery † circa 1913 locking sketch, newly acquired
W2 S3257Llangollen Station † circa 1913 locking sketch, newly acquired
W2 S3260Deeside Loop † circa 1913 locking sketch, newly acquired
W3 S3288Maentwrog Road † circa 1913 locking sketch, newly acquired
W3 S3290Festiniog Station † circa 1913 locking sketch, newly acquired
W3 S3291Tan-y-Manod Sidings † circa 1913 locking sketch, newly acquired
W9 T3321Crudgington † circa 1913 locking sketch, newly acquired
W9 T3615Hodnet Station † circa 1913 locking sketch, newly acquired
— T3620Birkenhead Woodside† Newly drawn drawing J104

List of amendments to CD #10 SR Sections P & S - Southampton area

Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
P14 R652Holmsley¶ Drawing S531 should read S351

List of amendments to CD #11 SR Sections A to L - SE&CR and LB&SCR

Latest amendments (July 2011) marked thus (†)
Recent amendments (February 2011) marked thus (¶)
Earlier amendments are unmarked
SectionSxxxxBox nameAmendment
A8 R1983Wickham Siding¶ Drawing S181 added
B1 R1757Abbotscliffe¶ Drawing D477 should read D447
B1 R1924Shakespeare¶ Drawing D477 should read D447
B13 R1638Chislet Colliery¶ Drawing B338 added
C4 R1794Chilworth¶ Drawing S735 should read S549
H13 R1339Tunbridge Wells West 'B'¶ Drawing S689 added