a.navbar-brand {
    background: url(../Images/sudbury_logo_colour.png) 15px 5px no-repeat;
    display: block;
    height: 90px;
    position: relative;
    width: 270px;
}
    a.navbar-brand span {
        left: 70px;
        position: relative;
        text-align: center;
        top: 15px;
    }