Liability for the compensation of a work accident injury

I was involved in a car crash in my immediate line manager's car in Abu Dhabi.

We were stationary at lights when a second vehicle drove at speed into the back of the car, I was thrown violently forwards and cried out in pain when the seat belt restricted my forward movement and my neck made a cracking noise.

The traffic police attended and called for an ambulance to take me to the emergency hospital for investigation and treatment. I was strapped to a spine board with my neck held in a brace.

I was x-rayed and examined by the doctors and was told I had torn muscle tissue in my neck, for this injury they gave me medication that the company paid for.

Eventually, my condition worsened and after an MRI scan, it was found that further injuries had been sustained.The police report made no mention of my injuries, yet the hospital report said the police had sent me and that I was injured.

The third party insurers decline any responsibility as no injury was mentioned in the police report.

What can I do?