Yahoo anwsers say =
get any 40 bus ie. 41, 42,43 etc..outside the train station on oxford road its about 5 stops and will cost around 75 pence. buses are every 3-3 mins due to it being a main student road the driver will put you off at the right stop which is right outside the stop
that was dated a month ago. though i dont live there so cant say.
source =
clicky
:edit: more!
Arriving at Oxford Road Station:
Walk out of the station taking steps on right or following the road, turn right onto Oxford Road and walk for ten minutes to the Union.
Source =
clicky scroll to near the bottom of that page, it has infomation on departing from all different locations to the academy, hope it helps!