Sadiq Khan has warned that Labour cannot rely on its "core vote" to win elections ahead of a meeting with party leader Jeremy Corbyn.
The new mayor of London warned that appealing to “natural Labour voters” alone would not be enough to secure success at a general election.
Mr Khan won an overwhelming victory over his Conservative rival Zac Goldsmith following a bitter campaign which saw Mr Goldsmith attempt to link him to Islamic extremists. Mr Khan said the Conservative campaign was "straight out of the Donald Trump playbook".
Asked on BBC One's Andrew Marr Show whether he owed some of his election victory to Mr Corbyn, Mr Khan replied: "Success has many parents and I think what's important is the victory on Thursday was a victory for London because what it showed was London chose hope over fear and unity over division.
“My point is very simple, we’ve got to stop talking about ourselves and start talking to citizens about the issues that matter to them.”
Absent
Mr Corbyn was absent from the ceremony on Saturday which saw Mr Khan signed in as mayor – an event attended by previous Labour leader
Ed Miliband
.
Mr Corbyn, who travelled to Bristol to celebrate with that city's new mayor Marvin Rees rather than attend Mr Khan's event, has insisted the pair are "getting on fine".
Mr Khan said: “I think we’re seeing each other tomorrow.”
Meanwhile Nicola Sturgeon has confirmed her intention to relaunch the SNP's independence campaign in the summer in Scotland despite the party being reduced to a minority in Holyrood. The SNP leader insists her manifesto pledge was backed by almost half of voters in the Scottish election on Thursday.