Both TfL and Uber described Tuesday's meeting between the Silicon Valley firm's new chief executive Dara Khosrowshahi and TfL Commissioner Mike Brown as "constructive", with the dialogue set to continue.
Uber promised to make things right in London after its new global boss had a "constructive" meeting with the city's transport regulator to try to hold on to the app's operating licence in one of its main foreign markets.
Mr Khosrowshahi has vowed to "make things right" in London after TfL expressed concerns over Uber's approach to public safety and security. "Further steps in this process will take place over the coming weeks".
On Monday Uber's United Kingdom head Jo Bertram stood down ahead of the meeting, with the company saying that her departure was not related to the non-renewal of the firm's London licence.
Uber failed, said TfL, in its approach to reporting serious criminal offences and how medical certificates are obtained.
Dara Khosrowshahi, who took over Uber's top job last month, flew to London for an urgent, high-level meeting to address the capital's concerns regarding its ride-hailing service. London Mayor Sadiq Khan, a Labour politician, supports the regulator's decision, while UK Prime Minister and Conservative Party leader Theresa May said in a BBC interview on Thursday that the city's plan threatened jobs and is "disproportionate".More news: Around The Horn as Romine plays all 9 positions for Tigers
Ms Bertram, head of northern Europe affairs, said an "exciting new opportunity has arisen that will allow me to apply what I've learnt here and I'll be able to share more details with you soon".
Khosrowshahi was appointed Uber chief executive in August, replacing co-founder and former boss Travis Kalanick and has promised change at the US$70 billion (NZ$98 billion) firm.
The meeting comes as Mr Khosrowshahi faces pressure in the U.S. over former Uber boss Travis Kalanick's influence over the company's board.
Uber will challenge the licence decision "with the knowledge that we must also change", he said.
More than 840,000 people have signed an online petition launched by Uber, urging TfL to reverse its ruling.
In a letter to colleagues, Bertram said she had "decided to move on to something new and exciting" after four years with the company, during which time its network of United Kingdom drivers expanded from a few hundred to about 50,000.