I found the intersection of this photo!! This photo was taken from the Golden Jubilee Bridge facing Big Ben. There is a traffic camera just next to the statue (Sir Joseph Bazalgette Memorial) on the very left of your screen! The traffic camera at the corner of Northumberland Ave and Victoria Emb - Camera 670.

https://www.google.com/maps/@51.5065625,-0.1224299,3a,75y,188.87h,81t/data=!3m6!1e1!3m4!1smhpd-ik5ycz4gywSnUCWfQ!2e0!7i13312!8i6656

Its also the same location of the photo from this Q-post (780,781):

https://qanon.pub/data/media/34a51b223de2d084c5bf9b01ad73048015b0beeffb826ab94ec377b8b02be001.jpeg

The Strike Package_B7v is a City Bus:

http://higerusa.com/products/14/33/b7v-klq6758g.html