Fic repost: Those People Down in Marketing

I'm leaving in about an hour for (another) fencing trip, but I need to get back on that reposting horse thing. So:

Those People Down in Marketing
Doctor Who
Rating: teen
(kissing, some ableist language)
Characters: Six/Ainley!Master, Mel, Evelyn. Mentions Peri and Delgado!Master.
Wordcount: 1,500ish
Summary: An office AU, where the Master is a programmer and the Doctor is in marketing, and they can't stand each other. Obviously.
A/N: Check out this photo of unbeardy Ainley, for it is the reason I wrote this.
Originally posted here for a prompt on the best_enemies anonmeme. Part XVII of the unanoning mission!

( fic under the cut, now with fewer unscheduled tense changes )