Again, thanks all for your ideas. I have finally managed to upload a photo of the very sad looking patch of garden devoid of tree!
Thanks to chilli lover - on the opposite side of the driveway, out of the photo we have an ornamental cherry, so at the moment the maple or silver birch ideas are favourite. Plenty to do, including some work on renovating the driveway after years of falling needles!! Looking forward to some gardeing action - hopefully should be warm enough this weekend although very frosty here is Derbuyshire again this morning!!