Simon Cowell and Lauren Silverman

Simon Cowell was spotted arriving at the service with his partner Lauren Silverman.

The media mogul was the mastermind behind One Direction when he put them together on talent show 'The X Factor'.

He wore a black turtleneck under a matching suit, while Lauren held his hand and carried a bottle of water.

In his tribute, Simon previously sent a message to Payne, saying: "I wanted to let you know what I would always say to the thousands of people who would always ask me. What is Liam like? And I would tell them you were kind, funny, sweet, thoughtful, talented, humble, focused. And how much you loved music. And how much love you genuinely had for the fans."