Get on with climbing fell — location of high-level discussion? (9)
I believe the answer is:
boardroom
'location of high-level discussion?' is the definition.
(where business executives might meet)
'get on with climbing fell' is the wordplay.
'get on' becomes 'board' (eg boarding a train).
'with' means one lot of letters go next to another.
'climbing' says the letters should be written backwards (in a down clue, letters climb up).
'fell' becomes 'moor' (both can mean an expanse of wild land).
'moor' back-to-front is 'room'.
'board'+'room'='BOARDROOM'
(Other definitions for boardroom that I've seen before include "top management" , "Directors collectively" , "executive apartment" , "venue for business meeting" .)