Please don't feel like you are on your own - Here are some support charities that may be able to help you - Please reach out. 

https://www.theasc.org.uk/  - The ambulance staff charity 

https://www.firefighterscharity.org.uk/ - The Firefighters charity 

https://www.policecare.org.uk/  - For Police Officers 

https://www.servicedogsuk.org/ - For all services, support for PTSD by way of a partnership with an assistance dog. 

https://policecharitiesuk.org/ - for a list of all Police charities.