On Brexit day, the Mayor is welcoming European Londoners and their families to City Hall to receive free advice on the EU Settlement Scheme from immigration lawyers.
There will also be emotional support services available and everyone who comes along will get a cuppa and sweet treat.
The event is open to anyone who wants to come together in solidarity with European friends, neighbours and colleagues.
Organisers recommend arriving before 6pm for the event highlight and guest speaker.
For the latest local news and events direct to your inbox every Monday, you need our weekly email newsletter SE1 Direct.