Jeff Lynne decided to reform the Electric Light Orchestra after BBC DJ Chris Evans and the listeners of his show expressed their desire to see ELO play live again.

[1] Lynne recruited former ELO member Richard Tandy along with a new band and played a single concert in Hyde Park, London to a crowd of 50,000 in September 2014.

"[14] Audiophile Review similarly said, "it sure is swell to hear these dense, complex arrangements performed live as Jeff intended them to be heard!

[13] In his review, Stephen Thomas Erlewine at AllMusic said that Wembley or Bust "could sometimes be mistaken for an ELO greatest-hits album", but he also mentioned that Lynne "is a little rougher and lower than he was at his peak".

[16] Most of the band had performed with Jeff Lynne on previous occasions at Children In Need rocks in 2013, Festival In a Day at Hyde Park and Glastonbury 2016 though the celloists Amy Langley, Jessica Cox and the violinist Rosie Langley (who replaced Chereene Allen on violin solos)[17] had appeared at Glastonbury as part of the Orchestra.

[19] The percussionist, Mick Wilson, was removed from the band before Glastonbury causing most of his role to be replaced by the backing vocalist Iain Hormal and Melanie Lewis-McDonald.