Yep you're on the cadet salary for 7 years, however this does increase each year and if you are promoted during that time as well.
Take a look at:
http://www.easyjet.co.uk/EN/Jobs/Pil...hipscheme.html
Scroll down a bit and it will tell you the current salaries for F/O (fATPL) - Senior F/O (ATPL) - and Captain all on the cadet scale.