BNP leader Nick Griffin will not face any action after he published the address of a gay couple who won a landmark legal ruling on Twitter, police told the BBC.
The MEP published the address of Michael Black and John Morgan on the social networking site and called for a demonstration to be held outside their home.
Following a police investigation and advice from the Crown Prosecution Service no criminal offences were identified.
More top news
It's all going on tonight - as belt of rain sweeps from in from the west - lively downpours will mean rumbles of thunder and hail
A baby boy, born yesterday into a disaster zone, has not yet been given a name as his family and his village wait for help.
Many survivors of the Nepal earthquake still desperately await basic practical help and the shadow of a health crisis looms large.