To work legally in UK you need to have С.S.С.S. card but to passe С.S.С.S. test it’s not so easy.
Here is a company that help’t me end that provides very good assistace services to all who want to work legally in constructions. http://citysafetysolutions.com
CSCS cards list the holder’s qualifications and is valid for either three or five years. It also shows they have health and safety awareness as all cardholders have to pass the appropriate CITB-ConstructionSkills Health and Safety Test.