The Met Police has applied for extra funding but the Home Office has refused to say how the amount as it confirmed the money had already been approved.
Home Secretary Amber Rudd is understood to have blocked the amount earmarked for Operation Grange being revealed.
A Home Office spokesperson said: “We are not publicising the figure applied for by the Metropolitan Police and the amount given this time.
“There is a lot of sensitivity surrounding this case and it is a challenging time for the Government.
“We remain committed to the investigation into the disappearance of Madeleine and advised the MPS last month that an application for Special Grant funding is being granted.”
A Scotland Yard spokesperson said: “You couldn’t get a more emotive case than this and there is still work left to do.
"We asked for more funding for a final line of inquiry that is still being investigated."
We can never say how close we really are for operational reasons, which could alert a suspect we are closing in.
“But a request for more money would never have been made if there was nothing left to chase.“We are grateful to the Home Office for approving our special grant request but we are not divulging how much we have been given.”
The police are also declining to say if the “final line of inquiry” is the same lead they have been chasing for the past three years and if any arrests are imminent.
https://www.thesun.co.uk/news/6056658/madeleine-mccann-cash-grant-150000-amber-rudd-secret-public-backlash/