Two muggers asked a man for a cigarette before grabbing his laptop computer.
The 55-year-old victim was targeted at the junction of Taylor Road and Kashmir Road, in St Matthew's, Leicester, between 9pm and 9.30pm on Friday, April 29.
Police released details and appealed for witnesses yesterday.
The attackers, who are both black and aged about 18 or 19, escaped with the man's silver and black Dell laptop.
Pc Raj Pahal said: "I would ask people to think back to the evening of the royal wedding. If you think you saw anything at all, please get in touch."
The first suspect was about 6ft tall and slim. He had short hair and was wearing a red shirt, black jeans, black jacket and white trainers.
The second man was about 5ft 7in tall and of average build. He had a shaved head and was wearing a brown leather jacket, white T-shirt, black trousers and black trainers. Anyone with information should contact Pc Pahal on 0116 222 2222.