Six Langley staffers guarding rocky hill station (8)
I believe the answer is:
victoria
'station' is the definition.
(Victoria is a major railway station in London)
'six langley staffers guarding rocky hill' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'langley staffers' becomes 'cia' (I can't justify this - if you can you should believe this answer much more).
'guarding' indicates putting letters inside (inserted letters are protected or guarded).
'rocky hill' becomes 'tor' (I've seen this before).
'cia' enclosing 'tor' is 'ctoria'.
'vi'+'ctoria'='VICTORIA'
Can you help me to learn more?
(Other definitions for victoria that I've seen before include "place where one may be stationed?" , "British queen" , "Tree; part of hand" , "Old carriage" , "Capital of the Seychelles" .)