Traffic Management Contractor - Find a freedom of information request

I seek by way of Freedom of Information the following which is held on file by external Contractors on behalf of LCC Lincolnshire Police/Road Safety Partnership.

Drive throughs are managed by traffic management contractors and any data is stored by them externally. Where information is required for a prosecution at court, Lincolnshire Police request access from the contractor via an external website with log in details provided by the contractor.

Please confirm Name of Traffic Management Contractor employed by LCC to complete this task and hold public records for benefit of prosecution.

Lincolnshire County Council employ Galliford Try Ltd to undertake the works including the provision of the traffic management.