A top level secret conference that saw roads shut off, a no fly zone implemented and the police out in force is expected to cost in the region on £1 million.
Herts Police was called into action when top business chiefs and political figures attended the Bilderberg Conference at The Grove hotel, on the outskirts of Watford, earlier this month.
Although the organisers have agreed to foot half of the security bill – something police chiefs say they were not legally obliged to do – it looks as though the taxpayer will be forced to cough up for the rest.
The police force is currently in talks with the Home Office about other funding sources to pay the costs.
Police and crime commissioner David Lloyd said: “I would like to congratulate Hertfordshire Constabulary for their professional policing of the event. I believe the reputation of the force and British policing has been enhanced by its success.
“My intentions, and the constabulary’s, are to keep the policing operation cost-neutral for the people of Hertfordshire.
“We are having discussions with the Home Office around other funding sources to achieve this end and bridge any funding gap. Details of the outcomes from these discussions will be released as soon as they are finalised.”