From 19 to 22 September 2013, Matt Willis and James Bourne made a surprise brief reunion as Busted when they joined McFly as special guests during McFly's four 10th anniversary concerts at the Royal Albert Hall. Willis and Bourne's ex-bandmate Charlie Simpson, whose decision to quit Busted led to the band's break-up in January 2005, chose not to take part at the concerts. Under the name "McBusted", the six-piece performed Busted's "Year 3000" and "Air Hostess" and McFly's "Shine a Light". This sparked rumours that Busted could make a comeback. On 11 November 2013, it was announced that Bourne and Willis would join Tom Fletcher, Danny Jones, Dougie Poynter and Harry Judd and go on an eleven-date arena tour in April and May 2014 as McBusted, playing both Busted and McFly songs. Simpson refused to be a part of McBusted as he wanted to focus on his own career, but he was paid a six-figure sum by Willis and Bourne after he sold his third of the copyrighted Busted name. A source told the Daily Mirror that Simpson's decision not to be part of McBusted was an amicable one: "Charlie wishes the boys lots of luck but he wanted absolutely no involvement. All three sat down amicably and worked out a figure that everyone was happy with. Charlie made it clear in no uncertain terms that that's it for him and the boys now, it's finished."
Pre-sale tickets for the eleven shows went on sale at 9am on 14 November and sold out in minutes. Tickets went on general sale the following morning and quickly sold out as well, resulting in the addition of six more concerts in Glasgow, Bournemouth, London, Birmingham, Cardiff and Manchester. Another four dates were then added on 17 November, bringing the tour to 20 dates. Since then, the tour has increased to a total 34 dates throughout April–June 2014. It comprises dates in Glasgow, Liverpool, Bournemouth, London, Newcastle, Nottingham, Leeds, Birmingham, Sheffield, Cardiff, Manchester, Brighton, Dublin and Belfast. Due to high demand, a section called the OMFG! Zone has been made available across their UK tour (excluding Bournemouth and Brighton). This area is sectioned off from the rest of the venue and is the closest to the stage. There is also opportunity to upgrade from standard tickets to the OMFG! Zone at ticket outlets.
From opening night until 10 May, the support acts were Young Brando and EofE (both British 4-piece bands) and 3 Dudes (an American 3-piece band). From 11 May onwards, Hollywood Ending (another 4-piece British band) replaced The 3 Dudes. Their lead guitarist is James Bourne's younger brother, Chris, who features as Peter in the music video for Busted's hit "Year 3000".
At the 25 April show at The O2 Arena, the band revealed that the show will be recorded and released on DVD and Blu-ray later in the year. On 10 September, it was announced that a McBusted concert film Tourplay would be released exclusively through Vue Cinemas on 28 October for one day. Both Tourplay and McBusted: Live at The O2 was released on 24 November 2014.