They slip on bread outside of Exeter station's north facade (7)
I believe the answer is:
loafers
'station's north facade' is the definition.
I can't judge whether this defines the answer.
'they slip on bread outside of exeter' is the wordplay.
'they slip' becomes 's' (I can't explain this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another.
'bread' becomes 'loaf' (loaf of bread).
'outside of' means to remove the middle letters.
'exeter' with its middle removed is 'er'.
'loaf'+'er'='loafer'
's' put after 'loafer' is 'LOAFERS'.
Can you help me to learn more?
(Other definitions for loafers that I've seen before include "couch potatoes" , "Casual shoes" , "Comfortable shoes" , "They add cargo" , "Casual footwear" .)