[Stooky Bill]

 Was it in the Elephant House - see later on the page i linked to
Elephant House.  The latter now houses Channel 5 Productions and has been renamed Elephant House Studios.  In the autumn of 2016 a small studio was created here for Channel 5’s long-running kids’ show [i]Milkshake.[/i]

No, as the page says The Elephant House is adjacent to the TVam/MTV now Paramount building. In the video it was one of the buildings visible from the front of the old MTV... it was across the road from the Elephant House


EDIT. now I'm on my laptop I've been able to search for the video and a picture of the building on streetview


Here's the video, notice both the TVam building and the Elephant house behind Meatloaf as he comes in. the description says:
'Mtv europe was coming to the end of its residency at chrysalis-tv in camden, & would move to its new home in the old TVam building six weeks later'
vimeo.com 

Here's anther video by the same person, this time Take That arrive. Notice the Chrysalis TV logo on the door and TVam in the background:
vimeo.com 

and this is the building at number 13 in 2009 waiting to be demolished
goo.gl