Ticket Exchange anyone?

[Singing Bear]

Hi. I have purchased a ticket for Bristol on 6.4.17 (the physical ticket as not yet been sent to me) and, due to rather infuriating family commitments, I won't be able to get there.
I know this may be a long-shot but would anyone be able to swap for Birmingham? If not, does anyone know of a method of fair-exchange via the out-lets? Go on, Trinity is a great venue! :)