cars?

hi i have a clio 1.2 1998 petrol , i woke up this morning to find that the car wont start , theres plenty of petrol, so i checked the coil and plugs there is no spark , i have replaced the coil yet still no spark , checked all the fuses they are good , checked earthing straps and wireing they bo are good , When i turn on the ignition the flashing red light by the clocks goes off , so i take it that the imobiliser is working well .
I need help driving me mad now
any sugestions please