Chris Martin's father is adamant the Coldplay frontman is still "great mates" with his estranged wife Gwyneth Paltrow following the breakdown of their marriage.

The Hollywood couple announced the split in a statement posted on the actress's website on Tuesday (25Mar14), revealing they had decided to separate after years of working to save their relationship.

Speaking about the break-up for the first time, Martin's father Anthony, insists he was sad to see the couple part ways as they have two children together - Apple, nine, and Moses, seven - but is glad the split was amicable.

He tells Britain's Daily Mirror newspaper, "(It was) sad and upsetting... (But they are) still great mates... If you are married you know you have good days and bad days. We all have our ups and downs. It's sad because there are our two grandchildren. But it is all very amicable between them."

Anthony adds of the couple's decision to use the phrase "conscious uncoupling" instead of "divorce" when announcing the news: "It's all in the statement - the expression that was used - conscious... I am proud of what they have achieved in their lives."

Martin and Paltrow married in 2003.