This from the Government website
Your CV should:
•be neat, typed if possible and to the best standard you can achieve in content and layout
•be short, two sides of a sheet of A4 paper is normally enough
•be positive, it should emphasise your achievements, strengths, successes and how you have contributed to your employers making a profit (add figures to support facts whenever you can and use positive action words, for example: ‘consulting’, ‘negotiating’, ‘managing’ and so on)
•make a good impression, this means presenting the facts about yourself in a clear and positive way