@owen: For image, you have to add the following CSS in “Appearance => Theme Options => Custom CSS” box.
#site-title a {
background: url("http://www.owensinclairjones.co.uk/wp-content/uploads/2013/07/apple-touch-icon1.png") no-repeat scroll 0 0 transparent;
display: inline-block;
height: 63px;
padding-left: 65px;
}
And remove the following Custom CSS that you previously added for image.
#site-title {
background-image: url("wp-content/uploads/2013/07/apple-touch-icon1.png");
background-repeat: no-repeat;
background-size: 56px auto;
line-height: 56px;
padding-left: 60px;
}