what you studying at epsom?
Otherwise, people generally go to Kingston or Sutton, in Kingston obviously Oceana is a popular choice but there's also Bacchus and McClusky's, depending on your music taste and price range! Sutton has a place called Revolution which is very popular and pretty cheap.
There's a huuuge sainsburys with excellent booze deals in Epsom as well, so look out for that!
Yeah maybe you can tell that I live pretty near Epsom :P