How can we mend a hole in our conservatory roof?

We have an ultralite 500 roof on our conservatory, following a torrential downpour we noticed a hole about the size of a 50p in one of the panels, it looks as if a stone possibly from the house roof or dropped by seagull has made the hole. it is fairly accessible about 1metre in from the gutter. Because of the box constrution the water is not getting into the room but is getting into the box space. Also once the dreaded gulls dicover it they will no doubt enlarge it. Help. The roof is 7 years old.