Help - Major lawn problem

I killed dandelions in my lawn with a weedkiller, which also killed the grass, the bald patches are now sprouting leafy weeds and there is also a lot of clover in the lawn, any suggestions what I could use to kill the "new" weeds and clover before I re seed with grass, thanks:thumb:

 

A proper selective turf weedkiller ie Verdone extra. Spray it rather than watering it, two aplications will be needed, a 2 week gap in between.