Ran a business in Port Talbot initially! (5)
I believe the answer is:
dealt
'ran a business' is the definition.
The definition and answer can be both to do with ownership as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'port talbot initially' is the wordplay.
'port' becomes 'deal' (I can't justify this - if you can you should give a lot more credence to this answer).
'initially' suggests taking the first letters.
The first letter of 'talbot' is 't'.
'deal'+'t'='DEALT'
'in' is the link.
Can you help me to learn more?
(Other definitions for dealt that I've seen before include "Delta (anag.)" , "Delivered" , "Handed out (cards)" , "Dispensed (cards)" , "Carried out business" .)