Check out the EMEA Partner Program Quick Reference Guide for a quick view of the benefits & requirements of Specializations & Program Levels. You can find the UK version here:

http://www.symantec.com/en/uk/partners/programs/specializations/

but the guide has been localized into at least 10 further European languages so to navigate to the correct page in your language, just

> Select your country > Symantec.com Home > Partners > Programs > Specializations

Let me know if you have any questions!

Kim