A Bow Tie from Distinguished Cravat called “Kindness.” Visit there website to see all these great bow ties. 

You can follow Conor Whelan work at http://www.conorwhelandesign.com/ and see some of this older work at http://conorwhelanwork.tumblr.com/ which I would highly recommend doing both.
Another Doctor Who video (with spoilers, so be warned) but there is a scene where he untie his bow tie.
I tend to enjoy these older style clothing including the bow tie.