Welcome to the site and sorry about this diagnosis.
OK, take a big breath. I don't know anything about the NHS, but as Phyl noted there are quite a few people here who have received treatment in Britain. Also there is a support group, the BANA, which you may want to look for.
From the sounds of it, is seems that indeed you may have facial neuromas (although this is not always visible from the MRI), but your facial twitching suggests this. If this is the case, then your doctors are probably right that wait and watch is the best approach since your tumors are small, because surgery or radiation can damage severely the facial nerve. Radiation may not be favourable if you have NF2 (which is likely since you have two tumors). Generally doctors in Europe and Canada favor the conservative management (W&W) for small tumors.
Having said this, you should insist to get a referral for an experienced neurosurgeon, who will be able to monitor your condition and will be able to explain more. Most likely if your diagnosis was made by an ENT or general practitioner, they don't know much, that's why the lack of information. It may take a few months to get a referral, but then you will be able to get an expert opinion. It is annoying when doctors talk down to the patients, not explaining things - arm yourself with information from this site, and go asking questions. Once the doctors realize that you are informed (throw in the discussion a few medical terms too), they will immediately change attitude and talk to you differently.
Don't hesitate to ask as many questions as you want and feel free to vent.
Marianna