The 2 replies above are spot on, at interview you would have something to discuss with the interview panel and examples that demonstrate certain qualities that the panel may be looking for.
Also of value are any Duke of Edinburgh Awards, as well as giving you good experience and teaching you how to handle certain situations well, possibly under pressure, if you do land that elusive first flying job you will have something interesting to talk to the Captain about rather than the latest PS3 game/ acne cream.