Robbie Williams has postponed his marriage with girlfriend Ayda Field again, after the details of the wedding got leaked, sources say.

The singer had first cancelled plan Valentine’’s Day marriage plan after the date was disclosed.

Since then he has been forced to cancel two more dates.

Now, Williams is apparently trying to find out the source of the leaks.

“Robbie and Ayda are desperate to marry and start a new domesticated life together,” the Mirror quoted a source as saying.

The insider added: “But when their first day, February 14th, escaped into the public domain, Rob hit the roof. He has played out his relationship with Ayda largely behind closed doors and wanted it to stay that way.

“They don”t want a huge showbiz wedding with glossy magazines in attendance and flashbulbs going off.

“So it is vitally important to both of them that it stays private with only a handful of people knowing where and when the event will be.

“Two other dates were suggested almost as a test to see if and when they got leaked. He is determined to find the culprit – and cull him or her from their circle of friends.”

Meanwhile, Field can”t wait to get married to the ”Bodies” hitmaker.

She reportedly said: “I can”t wait to marry him. We”re so in love, it’’s a case of the sooner the better.”

They are now expected to wed at year-end in a private ceremony in LA.