English snowball tree or bush?

Answer 1

Snowball Bush or Viburnum:
http://flickr.com/photos/53382624@N00/173347374/

'Snowball' ("Snowball Tree") the flowers are only of the larger sterile type, making it more conspicuous

Snowball bush is a name often given to Viburnum opulus for its white clusters of flowers that appear in spring. There is some confusion, as there are a few other bushes, including other members of the Viburnum genus, also referred to as "snowball bush".
http://en.wikipedia.org/wiki/Viburnum_opulus

Hope this is helpful.

Answer 2

I have never heard them referred to as English, though.