Posted: 30/03/2013 at 11:29
Yes, looks like an elder (Sambucus). Are the new leaves golden in the spring?
Possibly Golden Glow or similar http://www.adamsons.ca/sambucus.html
I'd cut one third of the branches down to the base now, the same next spring and the same the following year, and carry on like that, so that none of the stems are more than three years old. That'll keep it more compact and with young growth.
A lovely shrub - use a few of the flowers to make elderflower fritters or to flavour a gooseberry pie, or a lot of them to make elderflower wine