I have published quite a lot of photos of the new Willesden Library Centre, which in many ways is the culmination of Brent's Libraries Transformation Project. Oddly, this hasn't included the children's section, which takes up most of the ground floor.
This is certainly far larger than the children's library in the old Willesden Library Centre. It also has a far more open frontage, as you can see here:
The new children library, like Wembley Library before it, also has a number of ipads set up as well as a broader range of facilities than the old library.
Really, I think it is one of the many features which makes the argument that the new library is greatly superior to the old frankly undeniable.