Updating my CV post-Academia ( UK ) I've got a pretty awesome CV (I think), through hours of trailing through websites and reading tips. However that was back when I'd just finished University and now it needs updating!

I'm 25 and I am into my 3rd job since university and so have quite a bit of experience about these roles.

I have a few questions.


It seems my job experience now out weighs my education. Should I move my Work Experience to page one and my education to page two?
Do I still need my GCSE's on my CV? They don't seem very relevant.
How much detail about my education do I actually need?
Do people still care what A levels I did?
Do people want to know my dissertaiton title and what key subject I learnt, or is my degree title now enough.
Moving onto my work experience. I have had two jobs that are really relevant to what I'm aiming at and the third is less so. What is the minimum I should put for the third job, it's title?


Let's hope someone can help, everything I normally find is for new graduates CV's, bless them but I need some help too!

EDIT 
Looking for UK or European answers, the US is too crazy. I don't have a GDP ;-)
To answer some of your questions:


While there's no set guideline, education often comes first. You should include the university where you earned your BS/BA (list major, GPA, and any honors), masters university (field, GPA, and thesis title if applicable), and doctorate university (field, GPA, thesis title). High school and similar degrees (including A-levels) should not be listed. Note that a brief (one to three sentence) explanation of your masters and thesis work may be useful here; most people in industry won't have any idea what "Detailed Sprockification of Remonstrantized Grommits in Hypernormalized Framistans" means, so a short layperson description will show (1) that you can communicate and (2) that you did cool stuff that they can understand.
Work experience should include company, position title, responsibilities. You can summarize responsibilities in bullet points or short (two to three sentence) paragraphs, it makes no difference either way.


To answer some things you left out:


Strongly consider adding an Objective Statement to the beginning of your resume. It should summarize your career goals in a sentence. Check out this website which I found on Google for some discussion of what this is.
Include publications, teaching experience, grants awarded, trainees mentored, and notable community service (awards received, board memberships, etc).