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The One Show at 20

Christine Lampard, Matt Baker and Tom Grennan join in the 20th-birthday celebrations..

Steph McGovern and Vito Coppola join Alex and Roman, and Owain Wyn Evans is in Blaenavon.

Jennifer Reoch is live in Glasgow for the solar eclipse with Alex and Roman in the studio.

Al Murray and Joe Wicks join Alex and Roman as the 20th birthday celebrations continue.

Sian Clifford and Russell Watson join Alex Jones and Roman Kemp.

Alex Jones and Roman Kemp kick off the show’s week of 20th-birthday celebrations.

Ben Miller, Sunetra Sarker and Gareth Malone join Alex and Roman on the sofa.

Ricky Gervais and Chaka Khan join Alex and Vernon on the sofa.

Mo Gilligan, Danny O'Donoghue, Tracy-Ann Oberman and James Dreyfus join Alex and Lauren.

Nicky Campbell, Brian Conley and Lucy Conley join Alex Jones and Roman Kemp.