Originally Posted by
remedy
Yes, but are there lounges in Terminal 4 to which OWE members have access?
If you are seeking access based upon your status, then you need to be flying a oneworld airline that day. From oneworld.com:
Enjoy exclusive access to premium airport lounges around the world with oneworld Emerald or Sapphire frequent flyer tier status. Members of oneworld airline frequent flyer programmes with the equivalent of oneworld Emerald or Sapphire tier status can use lounges offered by oneworld airlines when departing on any flight marketed and operated by any oneworld member airline, regardless of cabin class being flown