The Spice Girls are reportedly set to reunite to mark their 20th anniversary with a world tour – without Victoria Beckham.

The girl group released their debut single in 1996 and will celebrate two decades in the spotlight by hitting the road together next year.

However, Victoria – known as Posh Spice in her pop star hey-day – will sit the trek out, deciding to focus on her ever-expanding global fashion brand instead.

A source tells The Sun: ‘There is a huge demand for the Spice Girls to get back together, especially with the nostalgia around the two-decade anniversary of their first release next summer.

‘Mel B flew into London last month to secretly agree the plan with the other three girls. They should each make more than ten million pounds from this.’

Victoria – who took part in the group’s 2007-2008 reunion tour and their appearance at the London Olympics closing ceremony three years ago – still has the option to take part but insists she is too busy.

The source added: ‘Victoria wishes the girls the best of luck. She is far too busy running her fashion brand and looking after her family to get back on a stage.

1994 – The group are formed after responding to an advertisement in The Stage.

1996 – Their debut single Wannabe is released, going on to become a No.1 hit in 31 countries.

1997 – Geri famously performed in the Union Jack dress at the Brit Awards, where they go on to win two accolades.

Later that year, starred as themselves in the critically-panned Spice World movie.

1998 – In May, Geri announces she is to quit the band, but the remaining girls are determined to carry on a four-piece.

1999 – Took an eight month break, reuniting in August for record their third and final studio album.

2000 – Following disappointing album sales of Forever compared to their first two discs, the four-piece go on hiatus to focus on their solo careers.

2007 – All five original members of the group announce their plans to reunite with a worldwide tour starting in December that year.

2008 – Cancelled several tour dates due to ‘personal and family commitments’.

2012 – Reunited to perform at the London 2012 Olympics Closing Ceremony.