By Dave Burke Rishi Sunak’s flagship promise to deliver free childcare to millions more families is at risk because of funding, IT and staffing problems, it is claimed. Insiders have warned lights are “flashing red across the board” as officials desperately try to get the scheme up and running by April. It would be hugely damaging if the Government is unable to deliver after Jeremy Hunt made it a central part of his Budget in March last year. It is understood that thousands of parents have been told they won’t be able to offer free childcare this year because of a series of issues. The Departm…