The Common Norway Spruce, Picea abies, is what most people call the the Christmas tree, although the "non-drop" Nordmann fir has become popular recently. When it is grown out in the open, with full sun, it will take a classic Christmas tree shape, with a broad base of spreading branches close to the ground and a gently tapering shape towards the top. It decorates itself with quite long, cigar shaped cones that hang down from the branches.
If it is grown in a forest situation, it will quickly lose its lowest branches as they are shaded out and concentrate on growing straight up. Eventually, it will become a tall, slender tree with a clear trunk for over half its height and quite a small, narrow canopy.
Chalky soil is not suitable. Your trees will grow in any soil type that is fairly moist and fertile. When the trees are young, they will tolerate quite a lot of shade and simply grow slowly, working their way into the light. Exposed, windy locations are fine.
Your trees will reach about 40 metres.
Picea abies isn't actually native to Britain, but it has been grown here since at least the 1500's and it is now found everywhere. It is one of Europe's most common softwood timber trees