Hey Nan! Ill be moving to the Islington area in about a month!
I would really recommend looking into the Highly-Skilled Migrant Program - they give you a little "quiz" to go through to see if you qualify. You can get points for having degrees or other certifications, working in your field for so many years, or making a particular salary.
Im trying to find a link for the info, but my computer is being slow and making me late for work, so good luck. im sure you can find it through the british consulate site.