In most situations help can be obtained from GP
Family physicians are not experts, but they can often refer to an IAPT service (talking therapy) or try to prescribe medication.
If they do not feel sufficiently experienced they can refer to local psychiatric teams - if this is not an urgent problem usually means at least a few weeks of waiting.
If the problem is sudden - like suicidal attempt, or intense self-harm thoughts or disturbed behavior in psychosis, you should probably go to the nearest Accidents and Emergency - more and more hospitals have so called Psychiatric Liaison - consultative psychiatry teams working in the hospital and often in the Emergency Department.
It is usually possible to obtain an interpreter if you do not speak English well enough, although this depends on local access and the translators are often inexperienced in mental health.
In more urgent situations it is more difficult and if someone from family or friends speaks good English then it would be worthwhile to come to the meeting. Sometimes there is a telephone interpreting service available, but in emergency situations it can be problematic.
In addition to the help available within the public health service, there is of course the private sector. This can be paid by either your health insurance if you have one or per visit. From what I hear from the patients quality of these services is very diverse.
Additionally to get a consultation with a psychiatrists sometimes you need to travel long distances.
Because of the advancement in technology online assessment are now available. We are currently working on the development of a service that would help a person who respects his or her time and would rather be seen from the comfort of his or her own home.