UFC 138, headlined by Chris Leben vs. Mark Munoz, takes place Nov. 5 at the LG Arena in Birmingham, England.
Hathaway (15-1) defeated Kris McCray at UFC Fight Night 24 in March to get back on track after suffering the first loss of his career against Mike Pyle at UFC 120 last October.
Brown (12-10) recently snapped a three-fight losing streak when he defeated John Howard at UFC Live on Versus 4. The former TUF cast member is 5-4 in the UFC.
Also scheduled for the UFC's return to England is Brad Pickett vs. Renan Barao and Thiago Alves vs. newcomer Papy Abedi.