Macca 'grimly determined' not to cave in to Mills

London, Feb 12 : Sir Paul McCartney is reportedly determined that he will not cave into his estranged wife Heather Mills' demands and will let the divorce case proceed.

As the couple faced each other across a London courtroom for the first day of their divorce hearing, a source revealed that the former Beatle is not only feeling sorry for himself but for Heather, having to go through a bitter divorce battle.

"It gives Paul no pleasure to have to go through this," the Mirror quoted the source, as saying.

"Not only for his sake but for Heather's too. She wanted her day in court and now she's got it," the source added.

"He's more sorry than angry - but he will not be making any concessions. He always wanted their divorce to be conducted quietly and with dignity and Heather was not prepared to allow that.

"Now he wants it to be sorted out through the proper channels - and unfortunately for both of them, that is in court."

ANI