Tree identified!

As luck happened I was talking to a neighbour who had just planted one. It's a Tulip tree - Liriodendron Tulipfera.

Here's the info:
Liriodendron is a genus in the magnolia family (Magnoliaceae) consisting of two species of large deciduous trees. Liriodendron tulipifera is native to eastern North America.

It was also native to Europe, but became extinct there due to glaciation. I knew were all were dying to know this.

More importantly the tree was highly prized by the American Indians for making canoes. This knowledge will be very handy once the rains finally come and we have to paddle our way down to Bright.