The couple, who got engaged on New Year's Eve in 2009, ended their relationship several months ago after eight years together.
Revealing the news on Twitter, Range wrote: "Very sadly, after eight years together, myself and Dave decided to separate a few months ago. I wish him nothing but the best in life x."
A spokesperson for Berry told the Daily Mail: "Dave Berry announced today that his engagement to partner Heidi Range has been broken off.
"Mr Berry announced the news today although the couple agreed to separate in the Autumn. The split is amicable and no third parties are involved and he will make no further statement on the issue."
Range, who is rumoured to be starring in the upcoming series of Dancing On Ice, had previously said that she "can't wait" to marry Berry and was busy planning the ceremony.
Berry was recently unveiled as the new host of Capital FM's breakfast show alongside Lisa Snowdon, replacing Johnny Vaughan.