Williams was performing the first of two nights at Sandringham Estate over the weekend, his final shows as part of his 'XXV' European Tour, celebrating his 25 year solo career.
In the middle of his set, Williams introduced his “oldest friend from the band”, Mark Owen to the stage, as the pair performed Take That's 2008 hit 'Greatest Day'. The duo embraced, as the crowd sang portions of the track, with Williams saying afterwards, “Mr Mark Owen, everybody", adding "I love my boys".
See footage of this reunion below.
