Gloria Hunniford, Angela Rippon and Julia Somerville look at shocking examples of trips that have gone disastrously wrong. With most airlines now routinely overbooking flights, there is the story of one woman who was split up from her family and refused the seat she had paid for. Paralympian Libby Clegg exposes the hotels breaking the law by telling guests their guide dogs can't stay and, after hearing from families whose holidays were drastically altered at the last minute, there is advice on how major a change has to be before you are entitled to get some money back. Simon Calder has money-saving tips on visiting Barcelona.