THE SIGNAL BOX

BRANCH LINES

BLOCK INSTRUMENTS
Rare examples still in use

Compiled by John Hinson

Midland Railway Rotary Interlocking Block instrument

This section lists block instruments of types now becoming rare that are still in use on Britain's railway network. preserved railways are excluded from this listing.

Instruments Location Remarks
Great Western Single Line Lock & Block Ledbury
Malvern Wells
 
Glasgow & South Western Hurlford
Mauchline
New Cumnock
Kirkconnel
Thornhill, and
Holywood
 
Great Central (MS&L) Goxhill
Stallingborough
Woodhouse Junction
 
Harper's One-Wire Two-Position None on Network Rail

Still in use in the Irish Rebublic at:
Cobh
Cork
Glounthaine
Littleisland
Waterford West
Waterford Central

Lancashire & Yorkshire Hebden Bridge
Milner Royd Junction
 
London & North Western
Absolute
Arpley Junction
Crewe Steel Works
and others?
 
London & North Western
Permissive
Salop Goods Junction (Crewe)  
Tyer "Black Box" Kirton Lime Sidings
Woodhouse Junction
Wrawby Junction
and others?
 
Tyer No6 Tablet Dunragit
Glenwhilly
Barrhill
Girvan
 
No "Line Clear Release" on section signals Acton Canal Wharf
Neasden Junction
(Up only)

There must be much more information to add here - contributions welcome!

Additional notes kindly provided by "Marcus", Roger Bell, Andy Boal, Lee Farrell, Richard Parson and John Saxton

Additional information will be welcomed by John Hinson