Your photo clearly shows that the number 29 wheelie bin is in Dutton Street but less obviously there is also a Dutton Street sign on the corner where number 21 is mapped. And in fact, number 21 is already mapped as Dutton Street. I've remapped the entire stretch accordingly.

But there's a remaining question: what is https://www.openstreetmap.org/way/1466481244/ ? I suspect it's also not Maidenstone Hill because it no longer joins to https://www.openstreetmap.org/way/1466481244/