Thank you so much for taking the time to look and reply.
(1) I haven't had any more joy with trade directories either. Hadn't heard of Wilsons though so thanks for that one.
(2) He could have left the country but I cannot find him in any travel/immigration records at the moment.
(3) I have followed the PULLING's as you suggested including Mary who appears to later marry John MACKAY, a sailor from Ireland. Sadly nothing useful came from it re: WARNER. Still it was worth a try
(4) 1911 Census: I am pretty sure that this is the 1911 Census for Caroline. I traced the family back from her son Thomas via this census. There is always room for doubt but the WARNER family are still in Aberavon and this census confirmed family memories.
Thanks once again for all your help. Let me know if you do find anything.