Hey Blue, sure thing.
There's 2 places that are able to offer prescriptions for this: https://curaleafclinic.com/clinics/birmingham/ and https://www.alternaleaf.co.uk/
Give them a call, and explain to them you're interested in trying medical cannabis for your mental health problems (there's strains for chronic pain so if you have pain issues tell them that too). They will explain what to do. You'll need to make a request for your medical records it usually takes up to 28 days. So give your doctors a call and ask them how you go about requesting your medical records. I had to complete a form.
The process is simple. Once you got your records they'll book you an appointment.
This is the site that has all the strains that you can pick from, and all the pharmacies supplying it: https://medbud.wiki/. It's useful to take a look because you can ask the doctor for a specific strain you think will suit you.
And theres also Leafy, where you can see peoples reviews on the strains, and what their effects/benefits/pros/cons are: https://www.leafly.com/
Once you've got a script you'll be given a login where you can place your order for your script, you just enter your script number in and the strains the doctor has approved will be in your basket already.
If you want to skip trying CBD just tell them you've tried CBD before and didn't find it helpful (most people don't find CBD helpful for MH).
They offer dry leaf buds, vape liquid, and capsules.
I hope that's covered everything.