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Brecon & Merthyr Railway

Signal Fact 25

Bricklayer’s Arms Junction in South London was controlled by a succession of no less than six signal boxes between 1843 and 1975.

Remote control from London Bridge PSB followed, and transfer to Three Bridges ROC takes the total to eight.

This page should be regarded as “Work in Progress”. The webmaster will welcome additional information for this page.

In the list below the information is set out in tabular form, spread over four columns. The column entries are -

RailRef	The Line Code used in RailRef system.
Line Detail	The principal locations included within the Line Code. They are arranged in 'down' direction order. Locations shown are primarily stations and junctions to allow easy cross check against published atlases. Signal box names appear in italics where these are 'intermediate' to stations or have been shown to facilitate links from other pages on this web site. The inclusion of a station or junction name does not imply that there was always a signal box of that same name!
SBR	The section reference used in the relevant Signal Box Register published by the Society.
ELR	The corresponding Engineer's Line Reference(s). This will be blank for railways that never came within British Railways terms of reference. It will also be blank where British Railways had no surviving responsibility for infrastructure at the time the ELR system came into use.

RailRef	Line Detail	ELR
BM001	Brecon - Deri Junction 0m00c B&M / N&B boundary NH001 0m09c Brecon Free Street 0m53c Heol Lladron Junction BM002 1m75c Groesffordd Halt Tallyllyn Brynderwen 3m75c Talyllyn Junction station 3m79c Talyllyn West Junction BM003 4m33c Talyllyn East Junction CM035 4m75c Talybont-on-Usk 10m16c Pentir Rhiw 14m13c Torpantau 15m59c Dolygaer Halt 17m32c Pontsticill Junction station 17m36c Pontsticill Junction BM010 18m65c Pant Junction BM020 mileage change, datum Cardiff East Dock 27m46c Pant Junction 27m37c Pant (orig Dowlais) 25m64c Dowlais Top NW273 25m21c Rhymney Limestone Branch Siding BM021 24m35c Pantywaen Junction 23m48c Fochriw Junction BM022 23m03c Fochriw 21m02c Ogilvie Colliery Halt 20m53c Ogilvie Village Halt 20m34c Ogilvie Colliery Junction 20m30c Deri Junction RR012 BND: Brecon - Pant Junction BAP: Pant Junction - Deri Junction Article: Railway Magazine 1951 June (Talyllyn).	BND BAP
BM002	Brecon (Watton) Goods Branch 0m00c B&M / N&B boundary BM001 NH001 0m09c Brecon Free Street Watton Goods 0m53c Heol Lladron Junction BM001
BM003	Talyllyn Loop datum Whitchurch Cambrian Junction 107m79c (4m14c) B&M - CR boundary CM030 108mxxc (3m75c) Talyllyn (CR) 108m27c (3m79c) Talyllyn West Junction BM001 Mile post mileages in brackets are taken from sheet 57 (1923) of the LMSR (ex Midland Railway) Distance Diagrams, datum B&M - N&B boundary.	TYL
BM004	Talyllyn North Junction CAM - Talyllyn East Junction For details see CM035
BM010	Pontsticill Junction - Morlais Junction, datum Brecon B&M Boundary 17m36c Pontsticill Junction BM001 18m76c Morlais Junction (end on)BM011 NW	POL
BM011 NW280	Morlais Junction - Rhydycar Junction datum Brecon B&M Boundary 18m76c Morlais Junction (end on) BM010 NW272 19m64c Pontsarn 21m29c Cefn Coed 22m39c Heolgerrig Halt 22m69c Cyfarthfa Ironworks Junction 22m70c Llwyncelyn Junction BM012 23m44c Ynysfach Junction BM013 23m56c Rhydycar Junction	MJR
BM012 NW281	Llwyncelyn Junction - Cyfarthfa Ynynfach Siding 22m70c Llwyncelyn Junction BM011 23m12c end of line	LLZ
BM013	Ynysfach Junction - Cyfarthfa Junction 0m00c Ynysfach Junction BM011 0m22c Ynysfach Loop Junction BM014 0m35c Cyfartha Junction TV002	YNF
BM014 NW282	Ynysfach Loop Junction - Merthyr Junction 0m00c Ynysfach Loop Junction BM013 0m19c Merthyr Junction	MEZ
BM020	Pant Junction - Dowlais (Lloyd Street) 18m65c Pant Junction BM001 18m73c Pant (1st) 19m44c Pantysgallog 19m75c Ivor Junction NW275 20m17c Dowlais Central	BND
BM021	Rhymney Limestone Siding 0m14c Limestone Railway boundary 0m00c Rhymney Limestone Branch Siding BM001
BM022	Fochriw Junction - Fochriw Colliery 0m00c Fochriw Colliery Junction BM001 0m63c Tunnel Pit Junction
BM023	Deri Junction - Ogilvie Colliery datum Cardiff East Dock (Cilhaul Tramway) (Ogilvie Colliery) 20m70c B&M boundary 20m34c Ogilvie Colliery Junction BM001	OGI
BM030	Rhymney B&M - Bassaleg Junction GWR 20m78c end of line 20m70c Rhymney Lower 20m05c end of line from 1933 19m79c Abertysswg 19m73c McLaren Colliery Junction 19m58c New Tredegar Colliery Junction North RR011 19m23c New Tredegar Colliery Platform 18m39c New Tredegar 18m00c Elliot Pit Halt 17m50c Cwmsyfiog Halt 17m48c Brithdir Goods Junction 17m21c Cwmsyfiog Colliery Halt 16m26c Aberbargoed (1st) 16m16c Aberbargoed (2nd) 15m79c Bargoed Colliery Halt 15m25c Guaelod y Waun Siding 15m10c Aberbargoed Junction BM031 15m00c Britannia North End 14m60c Gilfach Quarry 14m30c Pengam 13m61c Fleur de Lis Platform 13m22c Maesycwmmer Junction GW444 12m44c Maesycwmmer 9m79c Llanbradach Colliery Halt 9m38c Barry Junction BY010 9m36c Duffryn Isaf Junction 8m74c Trehir Quarry Junction 8m39c Bryn Gwyn Colliery 7m69c Bedwas 6m70c Trethomas (aka Thomastown) 5m03c Machen Junction BM032 BM033 5m01c Machen 4m20c Machen Lime Kilns 3m61c Church Road 1m38c Rhiwderin 0m48c Bassaleg North Junction BM035 0m23c Bassaleg 0mxxc Bassaleg Junction AD002 0m00c Bassaleg Junction GW	BJR
BM031	Bargoed South Junction - Aberbargoed Junction datum Bassaleg Junction 15m72c Bargoed South Junction RR010 15m10c Aberbargoed Junction BM030	BDP
BM032	Caerphilly East - Machen Junction datum Bassaleg Junction 8m41c RR/BM boundary RR026 7m65c Rhos Llantwit Colliery Junction 7m29c Gwerndomen Halt 7m13c Gwaun-y-Bara Junction BM033 6m18c Waterloo Halt (up line) 5m75c Pentwyn Siding (up line) (1) BM034 5m37c White Hart Halt 5m03c Machen Junction BM030 BM033 (1) aka Old Forge Siding	CPY
BM033	Caerphilly Branch Down Loop Line datum Bassaleg Junction 7m13c Gwaun-y-Bara Junction BM032 6m32c Fountain Bridge Halt (down line) 5m37c White Hart Halt (down line) 5m03c Machen Junction BM030 BM032	CPZ
BM034	Pentwyn Siding - Machen Tin Plate Works Pentwyn Siding (up line) BM032 Machen Tin Works 0m00c - 0m45c
BM035	Bassaleg Yard - Nettlefolds Siding 0m45c Bassaleg North Junction BM030 0m30c Nettlefolds Sidings	NSZ

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