Whilst transferring these images through Flickr to my iPad and uploading using it I believe I have decreased the image quality, a problem I previously thought to be caused by the camera. Images that suffered most are DSC_620 i.e. Irish Air Corps Casa and DSC_700 I.e. BN Islander landing.
This Aer Arann is Aer Arann Islands, from memory I think it has some kind of link to Stobart Air but it kept the name Aer Arann as it operates services to the Arann Islands.