Tributes have begun pouring in for MP Jo Cox who has died after being shot and stabbed in Birstall, West Yorkshire.
The 41-year-old's husband Brendan Cox shared a photo of his wife on Twitter.
Labour leader Jeremy Corbyn led the tributes, hailing Cox a "real talent" and "much-loved colleague".
Prime minister David Cameron said Cox was a "committed and caring" MP, calling her death a "tragedy".
Lord William Hague, former Scottish minister Alex Salmond and former Labour leader Ed Miliband.
Labour's Yvette Cooper said Cox had been "one of liveliest, bravest and most passionate MPs" while her husband Ed Balls said there were "no words to describe how awful this is".
Scottish Labour leader Kezia Dugdale also shared her sentiments, calling Cox an "extraordinary" woman and one of the country's "brightest hopes".
Former Prime Minister Gordon Brown said: "Our memories will be forever scarred by this moment. Our hearts will always be hurt at our country's loss. Jo Cox was the most vivacious, personable, dynamic and committed friend you could ever have. Whenever you talked to her, the compassion in her eyes and the commitment in her soul shone through. Years of public service advancing the causes she cared passionately about should have been ahead of her.
"Sarah and I were privileged to work with Jo and her husband Brendan over many years and in her tireless efforts on behalf of poor and desolate children and mothers. She went to some of the most dangerous places in the world. The last place she should have been in danger was in her home town.
"People will say that this does not happen in Britain. This should not happen in Britain. And we must resolve that this will never again happen in Britain.
"My and Sarah's thoughts and prayers are with Brendan and their two young children. They will have all our support in the difficult days ahead.
"For them and for those of us who were Jo's friends, this is a devastating day. And it is a devastating blow to our democracy."
Labour's deputy leader Tom Watson said: "The whole of the Labour movement is devastated at Jo's death. We have lost a colleague so young who had much more to contribute to public life. She was our future.
"It is hard to comprehend how a compassionate, principled and beautiful person can be taken away from us so cruelly. It's even more devastating because she was doing what she did best - serving her constituents.
"We grieve her loss. Our love and prayers are with Brendan and Jo's family."