Sir Paul McCartney files for divorce

Sir Paul McCartney has issued formal divorce proceedings after his estranged wife Heather Mills rejected a£30 million offer.In a petition to the courts, the former Beatle has blamed the split on Heather's "unreasonable behaviour" claiming she was "argumentative" and "rude to staff".Paul has previously dismissed suggestions Heather, 38, married him for his money, but he is now furious his offer for a quick, clean break was rejected.A source told Britain's Sunday Mirror newspaper: "Paul is a reasonable guy who doesn't like confrontation."In his eyes, they agreed they wanted to make the divorce quick and painless and a settlement was virtually in place - but then Heather started getting unreasonable because she wanted more money."It appears she wants as much as she can and she has left her self open to suggestions that she is a 'gold digger'."

Paul has hired a team of top divorce lawyers, including Fiona Shackleton who represented Prince Charles in his divorce from the late Princess Diana, to assist him in his legal fight.

It is understood Heather - who some commentators are suggesting could be entitled to as much as

£200 million - plans to file counter-claims in America and Britain.

Reports suggest she claims Paul became "boring" after their wedding, preferring to stay in Sussex while she enjoyed socialising in London.

A source said: "Heather feels like he wasn't the man she married. She is prepared to throw everything at Paul."

The breakdown in relations between the pair - who have a two-year-old daughter Beatrice together - was emphasised this weekend when Paul was seen for the first time without his wedding ring.

Earlier this month, Heather confronted Paul with a tape-recording of a private conversation he'd had with his daughter Stella - during which the fashion designer launched into a furious attack on her step-mother.

Paul was also left devastated by photographs of Heather posing in a German sex book, and claims that she worked as a high-class prostitute - which she vehemently denies.