The argument could be heard outside the property where the potential future prime minister is living with Symonds, a former Conservative party head of press.
A neighbour told the Guardian they heard a woman screaming followed by "slamming and banging". At one point Symonds could be heard telling Johnson to "get off me" and "get out of my flat".
© Guy Bell/Rex/ShutterstockCarrie Symonds was part of the team involved in the launch of Johnson's leadership campaign.
The neighbour decided to call 999. Two police cars and a van arrived within minutes, shortly after midnight, but left after receiving reassurances from both the individuals in the flat that they were safe.
When contacted by the Guardian on Friday, police initially said they had no record of a domestic incident at the address. But when given the case number and reference number, as well as identification markings of the vehicles that were called out, police issued a statement saying: "At 00:24hrs on Friday, 21 June, police responded to a call from a local resident in [south London]. The caller was concerned for the welfare of a female neighbour.
"Police attended and spoke to all occupants of the address, who were all safe and well. There were no offences or concerns apparent to the officers and there was no cause for police action."
Johnson and Symonds have increasingly appeared together at public events in recent weeks. The former mayor of London topped Thursday's ballot of Conservative MPs in the party leadership contest and is now the favourite against Jeremy Hunt to be the next prime minister.
The neighbour said they recorded the altercation from inside their flat out of concern for Symonds. On the recording, heard by the Guardian, Johnson can be heard refusing to leave the flat and telling Symonds to "get off my fucking laptop" before there is a loud crashing noise.
Symonds is heard saying Johnson had ruined a sofa with red wine: "You just don't care for anything because you're spoilt. You have no care for money or anything."
The neighbour said: "There was a smashing sound of what sounded like plates. There was a couple of very loud screams that I'm certain were Carrie and she was shouting to 'get out' a lot. She was saying 'get out of my flat' and he was saying no. And then there was silence after the screaming. My partner, who was in bed half asleep, had heard a loud bang and the house shook."
Johnson left his wife, Marina Wheeler, last year and began a relationship with Symonds, who has been credited with revitalising his appearance and approach to politics. She was part of his team when he publicly launched his campaign for the Tory leadership earlier this month.
In recent weeks the couple have been sharing a flat in a converted Victorian house. It has been reported that they intend to move into Downing Street together if he is elected leader.
Johnson's office was contacted earlier on Friday for comment but had not responded by the time of publication.
"Left-wing neighbours admit to taping Boris Johnson row with girlfriend Carrie Symonds
A neighbour of Boris Johnson whose wife swore at the Conservative leadership candidate in the street and declared that “all Tories suck” has admitted recording a row between the MP and his partner and leaking the tape to a newspaper. Tom Penn, 29, a playwright, who lives with Eve Leigh in the same building as Mr Johnson and Carrie Symonds, claimed he had made an anonymous call to police in the early hours on Friday after becoming “frightened and concerned” by shouting and banging coming from his neighbours’ home. He said he gave his recording to The Guardian because Mr Johnson should be “held accountable” for all of his “words, actions, and behaviours".