He has met with President Michael D Higgins at Áras an Uachtaráin
The Mayor of London Sadiq Khan has praised the Irish people for their contributions to the British capital.
Mr Khan met President Michael D Higgins at Áras an Uachtaráin on Thursday.
President Higgins thanked him, on behalf of the Irish people and in particular the Irish communities in London, for his work in relation to the celebration of St Patrick's Day.
The men discussed a wide range of issues - including climate change, sustainable development, housing, transport and Brexit.
President Higgins also expressed his sympathies and support for the people of London - in relation to a number of terrorist attacks in recent years - and the Grenfell Tower tragedy.
The discussions also focused on the importance of close cooperation between Dublin and London.
President Higgins stressed the importance of linking economic prosperity to greater social cohesion and solidarity, in and between countries.
In a tweet after the talks, Mr Khan said: "London just wouldn't be the city it is without the contribution of the Irish community.
"Today I made sure (President Higgins) knows London is and always will be open to our Irish friends".
London just wouldn’t be the city it is without the contribution of the Irish community. Today I made sure @PresidentIRL @MichaelDHiggins knows London is and always will be open to our Irish friends. #LondonIsOpen pic.twitter.com/w6g8Z65NAi— Sadiq Khan (@SadiqKhan) December 6, 2018
Following on from this, Mr Khan held talks with the Taoiseach Leo Varadkar and met Minister of State for European Affairs Helen McEntee at Government Buildings.