There do have a qr code which took you to a link but didn't have pricing on for rent.
Should offer it to some local business at a discount rate and get it filled
I'm not sure if anyone would actually want to open there though, it's not a very good site really. Miles away from most people from Sunderland, in a station where the vast majority of people walk in and go straight downstairs.
The old layout was much better imo with seperate units and a smaller concourse area. The place is spartan as an understatement, similar to dreadful portico at Newcastle which has the exact same problems.