Always those old English seeing the whole world (8)
I believe the answer is:
everyone
'the whole world' is the definition.
'always those old english' is the wordplay.
'always' becomes 'ever' ('ever' can be a synonym of 'always').
'those old' becomes 'yon' (archaic pronoun equivalent to 'those').
'english' becomes 'e' (abbreviation).
'ever'+'yon'+'e'='EVERYONE'
'seeing' is the link.
(Other definitions for everyone that I've seen before include "All and sundry" , "Entire group" , "All the people" , "Uncle Tom Cobleigh and all" , "All without exception" .)