Debenhams are doing a 3 for 2 sale on Christmas items.
Note that this is probably only in-store.
This includes artificial trees which are £55 each.
Buy 3 and they are £36.67 each.
Note that the trees are unlit and without decoration but you do get a set of 12 baubles free with each.
The tress are 6.5 feet tall and come in green, black, bronze and gold. Frosted ones are dearer.
You can also buy a range of decorations and lights in the 3 for 2 sale also.