Susan Hall has said she will be "listening to Londoners" as she made a swipe at her Labour rival Sadiq Khan on the first day of her official mayoral campaign trail.
The Conservative contender vowed to focus on cutting crime, tackling "sky-high" rents and cancelling the Ulez expansion.
However, with less than six weeks to go before the election, Londoners are yet to see a full manifesto from the Tory candidate.
Ms Hall launched her bid to lead City Hall in a cafe in Uxbridge on Sunday. She was joined by backbench Tory MP Steve Tuckwell, who won a Westminster by-election in the constituency last year with his anti-Ulez campaign.
Mr Khan was joined by Labour leader Sir Keir Starmer when he fired the starting gun on his push to be re-elected mayor last week.
"While Sadiq Khan decided to launch his campaign by talking to his Labour mates in Westminster, I held an event at a café in Uxbridge and listened to Londoners," Ms Hall said on Monday.
"I have been travelling to every bit of our city, listening to your concerns."
The most recent polls show Ms Hall has drastically failed to close the huge gap between her and Mr Khan.
Ms Hall said she would be focusing on her Labour rival's record in City Hall in the run up to the election on May 2.
She said: "For eight years, Sadiq Khan’s had the wheel, and what’s he done with it? Life has just got worse.
"It seems that London is in decline.
"He shut 36 police stations, gave away £92 million of your money because he failed to get more police on our streets, and now over a thousand Londoners have been murdered on his watch.
"And don’t even get me started on housing. Just 4 per cent of the homes Sadiq Khan promised for 2021-2026 have been started.
"If we don’t get more affordable family homes built soon, rents will only get worse."
Ms Hall’s five-point plan for London includes putting an end to “inappropriate tower blocks” in the city to focus on building “family homes” and “bringing back borough-based policing”.
She has also vowed to scrap the Ulez expansion, which was extended to cover all of London last August, on “day one” if elected mayor.
Despite polls suggesting Mr Khan is way ahead of his Tory rival, the mayor has argued that the contest could be the “closest ever” with the voting system changing to first-past-the-post.
Mr Khan is also yet to release his full 2024 manifesto, which his team say will come in the “next few weeks”.
In a campaign launch last week he vowed to deliver 40,000 new council homes for the capital between 2018 and 2030, building on his previous target of starting 20,000 which he met last year.
He branded it the “greatest council homebuilding drive in a generation”.
However the extra homes will still dwarfed by the enormous number of people on council house waiting lists, with one in 50 people in the capital now homeless.
