ANYONE under 26 who intends to get an Inter-Rail ticket before the end of August can pick up some added value by buying through one of the 37 Campus Travel branches around the UK. Along with the ticket (covering 26 countries for pounds 249 for a month), you get a free film. You also receive a copy of the Campus Travel logo, and an entry form to an unusual photographic competition. The idea is that you take the logo somewhere imaginative and photograph it; the best picture wins pounds 500.