Director mostly agreed to go round Welsh island (8)
I believe the answer is:
anglesey
'welsh island' is the definition.
(I've seen this before)
'director mostly agreed to go round' is the wordplay.
'director mostly' becomes 'angle' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'agreed' becomes 'yes' ('agreed' can mean 'yes').
'to go round' says the letters should be written in reverse (I've seen 'going round' mean this).
'yes' back-to-front is 'sey'.
'angle'+'sey'='ANGLESEY'
Can you help me to learn more?
(Other definitions for anglesey that I've seen before include "Island off N.Wales" , "Welsh county" , "Some Welsh ground" , "Island of North Wales" , "part of North Wales" .)