Auto Parts: fuel line clips, vauxhall corsa, gm car

Question
i accicently put deisel in my petrol car and now have to drain it but cant work out how you get the fuel line inclipped, i have a vauxhall corsa 01 reg

Answer
    I am in the USA here, so I don't know much about Vauxhalls.  Drove a Fiesta around the North and up into Scotland back in the '80's, but that's not helping you.  However, Vauxhall is GM, and every GM car in the States for many years now (since the early '90's) uses a proprietary O-ring and clip to connect it's fuel lines.  I'm willing to bet that this is the case in Blighty as well.  So, if I'm right (and I would really like to know if I am) you'll be able to buy the special tool for coaxing these lines away from their fittings at any good parts store.  Good luck.