Marks & Spencer's wonderful online Christmas shop is very well-stocked, with a wide range of artificial trees and Christmas decorations available at all budgets, from little 1.5ft numbers, to light up twig trees suitable for outdoors. We determined that their Pre-Lit Grand Fir Christmas Tree was a great option that stood out from the rest of the Marks and Spencer Christmas trees on offer. Pre-Lit Grand Fir Christmas Tree, 7ft Shop Now Just one of Marks and Spencer's impressive faux tree offering, the Pre-Lit Grand Fir Christmas Tree is a triumph.