The county’s police force is the worst in the country for completing background checks on time.
Thames Valley Police was the only force in the UK to miss all its targets for Disclosure and Barring Service checks last year, which are required for anyone working with children and vulnerable adults.
By the end of November, the service had failed to carry out all its DBS checks by the 60-day deadline - and will now use additional funding to employ extra staff to deal with the backlog.
A spokesman for Thames Valley Police said the force acknowledged the large number of outstanding checks, but blamed a “higher than forecast volume” of applicants.
She said: “The force recognises the impact of delayed police checks and how it affects DBS applicants and also the effect it has on employers and partner agencies.
“The force is in regular contact with the national DBS and a clear plan has been developed to deal with these workloads.”
The DBS checks replaced those previously done by the Criminal Records Bureau and Independent Safeguarding Authority.