They were in one of the groups of 6 teams, came second with 22 points from 10 games and a +16 goal difference and weren't deemed one of the 4 best runners up.
England and Belarus had 17 points from 8 matches and belarus only had a +5 goal difference.
It's because their results against the bottom club andorra don't count, they got 6 pts and +8 goals from their 2 games with them - sorry i've answered my own query.
on a lighter note, do you think welbeck and henderson look like they are in love in this photo ?
http://www.uefa.com/under21/matches/...ort/index.html