Fillis i know just how you feel - i too have been shaking with anger when bangers were let off at midday near us!

Luckily we are not usually too bad in this area, but it has seemed worse this year.
DAP diffusers seem to reallly help. They work best after about 10 days but ours had a calming effect after about 3 days. Also try the www.soundsscary.com CD in an attempt to desensitise in time for next year.
MInd you, we have new year to cope with next!
Lindsay