 University College moved into its current location in 1837 . Around 150 students are accommodated within Durham Castle . Other college buildings , including converted 18th century houses and purpose @-@ built accommodation from the 1950s , 1970s and 1980s , are within five minutes ' walk of the castle . The college has 700 undergraduates and is currently the most over @-@ subscribed college of the University . In 1987 it admitted women undergraduates for the first time , having previously had an all @-@ male student body . 
