Lodge Hill & Chattenden Wood SSSI

I'm extremely upset that planning permission has been given to build on this home for about 1% of all nightingales in the UK. I'd like to get involved in a campaign. Can anyone tell me of any campaign that exists? I understand that if this development goes ahead it will be the biggest SSSI used for development in recent years, possibly ever. Obviously, this sets a precedent and puts every other SSSI in the UK in the danger zone.