Take That stars Mark Owen and Robbie Williams gave an impromptu backstage performance of 'Greatest Day', just before taking the stage in Norfolk on Sunday, August 27.

Robbie Williams and Mark Owen sing spine-tingling acoustic version of 'Greatest Day' in backstage video

Robbie Williams and Mark Owen wowed the crowd at Sandringham with an emotional duet of Take That's 'Greatest Days'.

Robbie Williams joined by Mark Owen on stage for emotional Take That reunion at Sandringham concert

Take That and Lulu reunite at BST Hyde Park

Take That reunite with surprise guest Lulu for 'Relight My Fire' at barnstorming BST Hyde Park show

Gary Barlow and his family

Gary Barlow shares very rare private photos of his three children and wife Dawn

Robbie Williams was performing at the Pinkpop music festival in The Netherlands when he asked his band to stop playing.

Robbie Williams forced to stop performing mid-show due to being 'knackered': "Stop, Stop"

Robbie Williams: British pop's greatest ever showman?

Robbie Williams review: Pop’s greatest showman entertains Isle of Wight Festival with cathartic set of classic hits

Greatest Days cast

Greatest Days review: A nostalgic pop triumph held up by Take That's classic tunes

Why did Jason Orange leave Take That?

Take That finally reveal the real reason Jason Orange quit the group in 2014

Gary Barlow has shed light on how he felt when Robbie quit Take That in 1995.

Gary Barlow opens up about his reaction to Robbie Williams quitting Take That

Robbie Williams in bed, serenaded by his kids

Robbie Williams's kids serenading him in bed with 'Angels' is the cutest thing you'll watch today

Gary Barlow, Mark Owen and Howard Donald will be performing in Camden and proceeds will be going directly to War Child, a charity offering aid to children affected by conflict.

Take That announce intimate one-off charity gig - date and tickets revealed

The cast of Greatest Days

Greatest Days: Meet the young cast of the Take That musical film

Lara McDonnell as young Rachel with the boys

Greatest Days: Who are the boyband cast members in the Take That musical film?

The trailer for Take That's musical 'Greatest days' has dropped ahead of the film's release later this summer.

Take That movie musical 'Greatest Days': Trailer, cast, plot, soundtrack and more revealed

Take That' original fifth member, Jason Orange, has been photographed in public for the first time since 2015.

Take That's Jason Orange is pictured for first time since 2015 - photo

Mark Owen in 2022 and in 2003

Mark Owen explains his change of appearance after presenter says he 'looks different'

Howard Donald joined his bandmates Gary Barlow, 52, and Mark Owen, 51, as the headline act at the star-studded event, however some Twitter users mocked the stars' appearance.

Take That's Howard Donald hits back at fans who mocked his appearance at the Coronation Concert

Take That and Calum Scott play the 2023 Coronation Concert

Take That say they’re Back For Good after Coronation reunion concert