Hi karena5412,
Dnb and UKG wise Abyss is the only place to go.....
Last year was absolutely mental there! I am sure this year will be no different. Black and white is crap.....don't worry about wasting time and money there
I too have not heard of any dnb acts for this year, but your best bet would be to checkout:
http://www.2sg.co.uk
They have a Napa forum which seems to be useful and updated ....
Sorry, but thats all the help I can give you. BUT if you hear of any dnb activities PLEASE LET ME KNOW!