It doesn mean, though, that there are already drifts of crispy leaves to photograph (some beech leaves too, in this one, but the fragile skeletal ones are horse chestnuts):
Most of our trees are just starting to turn, losing a small number of leaves. This is the horse chestnut which deposited most of those leaves!
This is what we'll miss most about the trees if they do all die: conkers. So pretty and shiny, though it's an early lesson in nature for all kids that if you take them home they lose that sheen within hours. Still, they are good for playing games with too!
This last photo doesn't quite work - I wanted to catch morning light by the river which was falling on just a few strands of these reddish plants, making them glow. But the camera couldn't pick it up, though you can tell from the weeping willow that there's sunlight around. It's also intended to show equinoctial tides: that puddle on the Thames path isn't due to rain, but to the river rising about as high as it ever does without an actual flood. The Thames is tidal right up through London, and the way the city looks changes so much when the river's very high or low.