This is the logo of <a href="https://en.wikipedia.org/wiki/Circassia_Pharmaceuticals" class="extiw" title="en:Circassia Pharmaceuticals">Circassia Pharmaceuticals</a>.
Circassia Pharmaceuticals
<a rel="nofollow" class="external text" href="http://www.circassia.co.uk/">Circassia.co.uk</a>