COMPANIES that withdrew advertising from Alan Jones's breakfast program on 2GB are set to return to his show this morning - less than three weeks after he told a Sydney University Liberal Club fund-raiser that Julia Gillard's father had ''died of shame'' because of her lies.

The comments prompted a mass walk-out of advertisers and sponsors from his show, estimated as costing 2GB as much as $80,000 per day.

About face ... they had turned their back on Alan Jones, but his sponsors are once again supporting the broadcaster.

But the executive chairman of the Macquarie Radio Network, Russell Tate, confirmed last night that some of those advertisers who withdrew from Jones's program would return today.

Mr Tate would not say how many companies were coming back to the show when contacted by the Herald, and when asked to name them said: ''No, I absolutely will not.''