Thanks everyone for the ideas and advice.
It seems there is no "miracle" quick method without damaging the paintwork so I have decided to use a bug remover spray immediately on returning home and then wash the front of the car with my normal car shampoo to remove remove the residue.
I'm going to keep a shampoo mix permanently in a spray bottle so it's ready for use and the whole operation shouldn't take more than 10 minutes.
Then when I do my big cleans, I'll use a clay bar to remove any little baked on bits that the other methods haven't removed.
Perry, which Citrus Spray do you use. I might experiment with some different products over the summer bug season.
Thanks again for all the advice.
