They say: ''There are simply no words for how incredible this is for us. We have always wanted to work together, it was just a case of getting the timing right. We are so grateful to all our fans who have supported us and everyone involved for believing in us. We are literally having the best time.''
Having first met ten years ago, performing together in Kismet at the London Coliseum, Michael and Alfie became lifelong friends. That same year, Michael made history as the first musical theatre star to be given a solo concert at the BBC Proms - and he asked Alfie to join him on stage at the festival.
Their natural rapport and personal connection were seen by even more people when they toured the UK together for the first time last year and hosted their own TV show, One Night Only.
Record-breaking: Michael Ball
Individually, the two artists have received a plethora of prestigious awards and enjoyed record-breaking sales and chart successes. During his 30-year career Michael has been a double Olivier Award winner, multi-platinum recording artist, top selling live concert performer and a hugely popular radio and TV presenter.
Exceptional: Alfie Boe
Alfie's exceptional voice has made him Britain's most popular and biggest-selling tenor. He has conquered the world's greatest opera stages and arenas, led the cast of Les Misérables, stole the show at the Queen's Diamond Jubilee Concert at Buckingham Palace, achieved UK album sales of over a million and had four top ten albums.
Michael Ball and Alfie Boe's 2017 UK arena tour dates:
Nov 30: Motorpoint Arena, Cardiff; Dec 2: Brighton Centre; Dec 3: BIC, Bournemouth;
Dec 5: Genting Arena, Birmingham;
Dec 7: Manchester Arena;
Dec 8: First Direct Arena, Leeds;
Dec 10: SSE Hydro, Glasgow;
Dec 11: GE Oil & Gas Arena, Aberdeen;
Dec 13: Motorpoint Arena, Nottingham;
Dec 14: The O2, London.