A 19-year-old shot dead in Lower Edmonton last night has been named by police as Mohammed Hussein.
A post-mortem is due to take place in Haringey. No arrest has been made, and police are appealing for witnesses.
Det Ch Insp John Sandlin said: "I am appealing for anyone who was in the vicinity of Bounces Road or Walbrook House at 2145 hrs to help us with our investigation. Likewise if you have any information - no matter how small that can help identify those responsible please come forward and assist us."
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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.