JohnP wrote:

I came across this on Google Map - looks like a building is going to be
slid into position. Any ideas:

https://tinyurl.com/y4swr6rk

Something odd about your link keeping streetview stuck in 2012 for that
area.

If you search for "De Vere Gardens" then use the streetview history
feature, you can see the old building there in 2008/9, then your
building site in 2012/2014 and the new building from 2015 onwards

https://goo.gl/maps/ZqBxURMUk79Hw8M67

https://en.wikipedia.org/wiki/One_Kensington_Gardens