Tomato Blight ..... Again(sorry)

We seem to have the start of tomato blight on all of our toms . Some of the fruits have turned brown . We've sprayed with the stuff you're supposed to spray with (girly moment here , can't remember the name , but think it begins with D!)

Lots of the fruit are still turning red , so I'm just picking them off as I go and giving them a good wash before scoffing them ... (haven't died yet!)

As the fruits are still ripening like they should be , can I fairly safely say that the spray has worked? .... plants don't seem to look any worse than they did before spraying

Also ,  when I pull the plants up is it true that I have to burn them? Not easy for us as we live in a flat and aren't allowed to have fires on our allotment sites. Can I just take the plants to the council green waste site , where I know they will be turned into compost , but heated up too a far higher temperature than my little compost bin ?

Thanks in advance (as usual)
Keep smilin'
Sal x

It's the burning bit that could be the problem , as I said earlier I live in a flat (tomato plant bonfire not the safest thing to have) and we're not allowed fires on the allotments 

I've I can't dispose of them in the council green waste skip at the tip , I have no idea what I'm going to do with them!

Thanks for the advice re the leaves though ... guess what I'll be doing this afternoon