He's got back already. He says one of the pictures on Smoke looks like Sycamore bark. He says 'The Moon Trees were sycamores, loblolly pines, sweetgums, redwoods and douglas firs.' I think he might want a definite identification, and if he gets one he might register the trees on his site.
Lang Rabbie, could you identify them for sure?
I would suggest you get in touch with Iain Boulton at Lambeth Parks department who as a professional ecologist would be better placed than me to say for sure that they aren't "common or garden" London Planes.
Beetroot i'm sure they planted 4 types of tree and because of different climates they type of tree was sent to a climate that suited it, the trees they used were, Lobiolly pine, Sycamore, Redwood, and Douglas fir, I also think there are some in Italy but I'm not 100% sure.