Thursday night's incident - which was filmed - happened after climate change protesters disrupted the beginning of Chancellor Philip Hammond's annual Mansion House speech to the City about the state of the United Kingdom economy. 'In the confusion many guests understandably felt threatened and when one protester rushed past me towards the top table I instinctively reacted, ' he said, 'There was no security present and I was for a split-second genuinely anxious she might have been armed.
London mayor Sadiq Khan, who belongs to the opposition Labour Party, described the footage as "truly shocking".
Sir Peter Bottomly, another Tory MP, said Field had done nothing wrong.
While he has received some support in response to the incident, it has led to calls for Field to step down, or be sacked by the government.
One of the activists, dressed in a red dress and sash, can be seen walking around the outside of the room before Mark Field, Conservative MP for Cities and Westminster swiftly rises to his feet to physically stop the woman.
The City of London Corporation is looking again at its procedures after Thursday night's incident.
Police escorted the protesters from the premises and no arrests were made.
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Neville's desire to always get forward even without the ball is reminiscent of what Wan-Bissaka has been doing in south London. The fee will usurp the €57.5m Man City splashed out on Benjamin Mendy two summers ago.
Greenpeace said the activists had wanted to deliver a speech on how the current system has failed.
Environmental campaign group Greenpeace said it had organised the protest in the heart of the capital's banking district, accusing the finance industry of funding climate change and the finance ministry of trying to water down government action to mitigate it. "Business as usual is no longer an option". "These reports are being looked into by police".
"Instead of assaulting peaceful women protesters, @MarkFieldUK would be better off spending his time tackling the #ClimateEmergency".
Labour's Shadow Women & Equalities Secretary Dawn Butler has taken to social media to condemn Field's actions, branding the scenes "horrific". This appears to be assault.
A number of MPs from each of the major United Kingdom parties have called for the resignation or suspension of Mr Field over the incident. "An investigation needs to take place as soon as possible".
"Clearly violent and criminal incident", he said.
The Greecepeace protesters were removed from the official event after several minutes.
On 20 June, chancellor Philip Hammond spoke at Mansion House.
In May, Britain's parliament approved a motion to declare a climate emergency following weeks of protests in London.