Just to add to the questions, while out this afternoon and being typically unorganised (no caches loaded onto GPS for the area) with no adequate data signal to use the phone we started to discuss where good hiding places would be. Much to our surprise we spotted a tab box nicely hidden in a hole in a wall!
Once discreetly retrieved we found that there was only a FTF log in it and that was back in April. We signed the log and recorded the coords to identify the cache later. Checking later, there are no geocaches listed within 0.2mi, it certainly wasn't the closest listing as a picture on the logs shows a different container. Is there anything I should do now? Obviously can't log it and don't see any archived caches in the area.
For info - this was in Portrush along the strand.