It's not great but it's still better than it was. Thirty years ago I used to get black snot and see black mice running about on the Tube tracks- they weren't really black, their fur was from the dirt.
I would also see a haze of yellow smog hanging over central London where I live, which was a direct result of traffic - buses, taxis. cars and vans. It was particularly bad in July and August when it was hot and still and also in January and February when it was cold and still. You couldn't see it as much but it was still there and taste it on the fog.
The mice are sleek and brown now and I don't see or choke on the smog so much.
That's anecdotal but is my experience. You are welcome to add your own anecdotes.
But what I really want to ask is whether you think the improvement in London air quality is a good thing for those of us who live here and whether you think it should be shared in Greater London and beyond.
I've lived in both and I would say a hard yes. I don't want asthma. A family member has it through no fault of their own - they're not a smoker or anything like that. Their son has asthma, eczema and allergies which are all related to air pollution.
It's not something that can be solved with a puff on the blue or brown inhaler or a rub of steroid cream. It's a killer. Why would anyone want someone to have that if they could stop it?
ULEZ is going to be introduced to outer London boroughs.
I suppose it doesn't really matter much to me because those in non-compliant vehicles are discouraged from driving here by a £12.50 charge a day. It puts them off and has not been a problem.
But I wonder why you are so keen to embrace them in your area.