Is it normal in the UK to bring a birthday cake to a restaurant and ask the staff to serve it at the end of the meal?

Posted by Rika_rena@reddit | AskUK | View on Reddit | 147 comments

My partner and I have been living in the UK for a while now, but we're from another country originally. His family is coming to visit for his birthday, and we agreed to go to a restaurant to celebrate. In my country it's common to bring a cake and tell the staff that we're celebrating a birthday, and ask them to serve the cake at the end of the meal, usually as a surprise. His family wants to do this but I'm not sure if it's rude to bring food from outside and ask them to serve it.

Is this usually done in the UK?