 During the 1950s and 1960s the college expanded through developments at Owengate and Bailey Court , both around Palace Green . In the 1970s , the college sold Lumley Castle . The proceeds were used to fund the development of Moatside Court , and meant that all the college 's students were now housed within five minutes of the main castle . During this period there was rapid change in the size and structure of the college , which expanded to over 300 undergraduates by 1979 . 
