Lawrence is in our custody faraway (5)
I believe the answer is:
outer
'custody faraway' is the definition.
I can't judge whether this definition defines the answer.
'lawrence is in our' is the wordplay.
'lawrence' becomes 'te' (TE Lawrence, Lawrence of Arabia).
'is in' indicates putting letters inside.
'te' placed within 'our' is 'OUTER'.
Can you help me to learn more?
(Other definitions for outer that I've seen before include "Surrounding" , "Away from the centre" , "Ring for double scores on a dartboard" , "Route (anag.)" , "Ring furthest from the bullseye" .)