I'm sorry you are having these problems. I can very much sympathize because I too hear voices.
Medication is certainly quite likely if they deem you to be suffering from psychotic symptoms. Personally, my psychiatrist asked if I wanted to try medication or not, which I did opt for. Granted they aren't the most pleasant medication around but they can help.
In the end of the day it really depends on things like how much problems the voices are causing. Like whether they are distressing, if you know they are not real
(insight) & their content.
(such as whether they tell you to do things or not, e.g. command hallucinations) As well as whether or not you have any other symptoms of psychosis.
I can assure you that you won't get admitted to a psych ward for evaluation or anything like that. It's not how the system works here. The only reason people tend to get hospitalized is if they are a danger to themselves or others.
What happened for me was I was referred onto mental health services and had an appointment with a CPN for assessment. They then passed that onto a psychiatrist who recommended a course of treatment & who I saw from that point on. I'd assume it'll be much the same with you, although procedure may differ slightly across different regions in the UK.
They are actually plenty of people around who hear voices but aren't considered to be suffering from a psychotic disorder. Something that may be of interest to you either way is the
Hearing Voices Network
I wouldn't worry too much about seeing the psychiatrist, I know it can be very daunting but they are there to help you in the end of the day.
Let us know how it goes & what the outcome is.