Hey, welcome to RYL (again) :)
I think that Alcoholics Anonymous is the best possible option for you at the moment. It's in the same family as Al-Anon and Ala-teen, except those two groups are for friends and family of alcoholics. AA is an organisation of great support for alcoholics. Alcoholism runs in my family so I know a bit about it. If you want more information, check out the website
Alcoholics Anonymous UK. I would suggest ringing the helpline to talk to someone, maybe enquire about meeting times. It sounds like you really want to get help, and AA members will offer you so much support.
Another suggestion is detox and recovery at a rehab centre/hospital. I'm no expert, so maybe it's wrong of me to suggest this, but it's worth googling or even getting in touch with your dr for information about.
Feel free to PM me if you have any questions (even if I don't have the answers I can find someone who does) or want to talk further. There is also the Alcohol and Substance Abuse board on the support forums too.
Take care m'dear, I really mean that. It's very difficult asking for help, but it's wonderful that you've even considered doing this.
xo