General Practitioner (GP)
They are your first point of contact - they are locally based and have your health history and if you have a good relationship with your GP they can have a more individualised approach. GPs are trained to identify health issues and recognise symptoms of mental health. If you let them know you aren't travelling well mentally then they can help by writing up mental health plan with you. This sounds formal but is basically an agreement between you and your doctor that you want some specialist support.
They can refer you to a practitioner or you can tell them who you want to see.
They may continue to support you along with your chosen mental health practitioner or just meet to review after 6 sessions.