The following table is based on information found in the Railway Group Guidance Notes GK/GN0525 dated October 2003 and published by the Rail Safety and Standards Board - Railway Group Standards.
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Lever Colour(s)
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Lever Function(s)
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Yellow
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Distant signal
Lever collars (for electrical isolations)
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Red
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Stop signal (main or miniature)
Ground signal
Route lever
(controlling route indicator)
Lever collars
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Blue
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Facing point locks
Clearance bar
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Black
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Points
Scotches
Derailers
Quadrants, catch blocks and
boxes
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Blue (top)
Black (bottom)
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Combined points/facing point lock (including Power points and
economic points)
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Brown
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Barriers
Wicket gates
Gate stops and locks
Bridge locks
Turntable
locks
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Green
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Gongs
Asking lever
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White
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Spare lever
Fixed lever (Apparatus removed from lineside)
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Blue (top)
Brown (bottom)
(Where specified for consistency
within a limited geographical area, alternative colour schemes may
be used.)
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Release lever
Switch lever
Annetts key lever
Bolt locking
lever
Direction Lever
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Red (top)
Brown (bottom)
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Acceptance lever
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Alternate brown and white stripes
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King lever
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Alternative black/white chevrons
(Chevrons point up for up
line or down for down line; on single lines, chevrons point in both
directions.)
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Detonators
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Red (top)
Alternate black/white chevrons (bottom)
(Chevron
direction as noted above.)
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Signals working with detonator placers
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Red (top)
Yellow (bottom)
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Combined home and associated distant signal (eg IB Signal)
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White (top)
Colour of original function (bottom)
(Where
specified for consistency within a limited geographical area, alternative
colour schemes may be used.)
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Levers worked to maintain locking or out of use and bolted secure
but with locking still attached. Where the lever is to be operated,
the lever top should be shortened and the requirement to pull the
lever to maintain locking (or for interlocking purposes only) should
be indicated to the signaller.
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Additional horizontal white band
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Any lever released from another signal box
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