Fresh from their stint on The Big Reunion last year, Sean Conlon, Abz Love, Ritchie Neville, and Scott Robinson will be entertaining crowds with their pop hits during the 10-day summer extravaganza.
5ive have clearly got the touring bug following on from their sold out Big Reunion arena tour in May, and their Christmas party tour in December, so we can't wait to hear them perform some of their much-loved songs on 6 July.
It'll be a case of boyband overload as 5ive will be sharing the stage with the likes of Lawson, rising stars The Vamps, 90s boyband Backstreet Boys and super-group McBusted, who will headline the gig.
Also joining the pop stars on stage will be 2009's Britain's Got Talent winners, dance troupe Diversity.
Backstreet Boys are one of the biggest selling boybands in the history of pop with a staggering 130 million records sold around the world. No doubt they'll be serenading fans with their iconic chart-topping hit, 'I Want It that Way'!
Meanwhile, newly-formed group McBusted (formed of Busted and McFly), are sure to put on an entertaining show with their infectious pop and rock songs.
More acts will be joining the British Summer Time concert for its second gig on 12 July, including the likes of Tom Odell and Neil Young & Crazy Horse.
Each live music-packed weekend will be linked by a midweek programme of diverse entertainment, which will be accessible for all.
For the full line-up at Barclaycard presents British Summer Time Hyde Park and to buy tickets, visit www.bst-hydepark.com.
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Watch 5ive's music video for 'Keep On Movin' below: