Lord Chancellor is wary called on mobile (8,6)
I believe the answer is:
cardinal wolsey
'lord chancellor' is the definition.
(I've seen this before)
'is wary called on mobile' is the wordplay.
'mobile' is an anagram indicator (mobile can mean moving).
'is'+'wary'+'called'+'on'='iswarycalledon'
'iswarycalledon' anagrammed gives 'CARDINAL WOLSEY'.
(Other definitions for cardinal wolsey that I've seen before include "Lord Chancellor" , "Shakespeare role" .)