app/assets/images/flags/gb-sct.svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 5 3">
<defs>
<clipPath id="a">
<rect width="5" height="3"/>
</clipPath>
</defs>
<g clip-path="url(#a)">
<rect width="50" height="30" fill="#0065BD"/>
<path d="M 0,0 L 5,3 M 0,3 L 5,0" fill="none" stroke="white" stroke-width="0.6"/>
</g>
</svg>