London has been placed seventh in a global league table of the cities most attractive to young people.
The capital scored highly for diversity, digital access and financial access - but was pushed down the rankings because of high youth unemployment.
Toronto came out on top, followed by Berlin and New York City.
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The pub owner said the sign is a nod at having a bit of fun in support of them and celebrating their relationship and the wedding.
A 61-year-old woman was taken to hospital with head injuries after the incident in Islington, north London.
Assema Kedir Habib spoke at the commemoration of her brother Hashim Kedir and his family.