The track Liberty, which knocked chart superstar Drake off the top spot, features the Invictus Games Choir, a community choir for serving and veteran personnel from all services, who are wounded, injured or sick, to help them in their recovery.
She's previously said she always prays before going on stage and said about this achievement that reaching the summit was particularly important because of where the proceeds are going.
"I am over the moon that the first time I achieve a number one hit is with an amazing song, Liberty and that I recorded it with my wonderful friends from the Invictus Games Choir," she said.
"What makes it even more special is that because proceeds from sales are going to Help For Heroes, it is testament to the fact that people are enthusiastic about supporting a good cause - in this case the brave men and women who have been affected by their service in the Armed Forces."
Proceeds from the sale of the single and the video will go to Help For Heroes, which supports the choir.
Listen to Carly Paoli speaking on Premier Christian Radio:We've done it guys! Grinning like a Cheshire Cat seeing my official Liberty music video no. 1 in the main charts. It's thanks to you all for your amazing support and together we'll make something very special happen for @helpforheroes .Special thanks to @InvictusGChoir #Liberty pic.twitter.com/CGyFXVLT58
— Carly Paoli (@CarlyPaoli) August 7, 2018
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