Exhibit 23.2(a)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to incorporation by reference in this Post-Effective Amendment No. 2 to the Registration Statement on Form S-1 for United States Brent Oil Fund, LP (333-187501) of our report dated March 26, 2015 relating to the statements of financial condition for the years ended December 31, 2014 and 2013, including the schedules of investments as of December 31, 2014 and 2013 and the related statements of operations, changes in partners’ capital and cash flows for the years ended December 31, 2014, 2013 and 2012 of United States Brent Oil Fund, LP included in the Form 10-K of United States Brent Oil Fund, LP and to the reference to our Firm as “Experts” in the Prospectus.

/s/ SPICER JEFFRIES LLP

Greenwood Village, Colorado

April 6, 2015