Chuka Umunna has said he will stand against disgraced Tory MP Mark Field - who grabbed a Greenpeace protestor by the neck.
The Lib Dem MP, who was relected as the Labour MP for the South London seat of Streatham, said he will try and take the City and Westminster seat from Mr Field.
The former Foreign Office Minister apologised in June when a video emerged of him grabbing a protestor by the throat.
Mr Field has a majority of just 3,148 at the 2017 election in the constituency where 72 per cent of residents voted Remain in 2016.
Mr Umunna told the Evening Standard : “I worked as a solicitor in the City and West End and I know they are the last places that should be represented by one of Mr Johnson’s MPs who has just voted to enable a no-deal Brexit .
“The City is the centre of international values, while the West End is home to our greatest creative industries.
"These centres are telling us that Brexit will be bad for them.”
Mr Umunna quit the Labour party in February and joined the ill fated Change UK before defecting again to the Lib Dems in June.
When Mr Field apologised for his attack on the protester he said he had grabbed her so violently because he believed she could be armed.
He said: "There was no security present and I was for a split-second genuinely worried she might have been armed.”
He continued: "As a result, I grasped the intruder firmly in order to remove her from the room as swiftly as possible.
"I deeply regret this episode and unreservedly apologise to the lady concerned for grabbing her but in the current climate I felt the need to act decisively to close down the threat to those present."
