This is going to require major surgery, and, unfortunately. the X-Ray machine is broken (there is no approved aerial imagery new enough to see the new road paths.

I took GPS traces along, what is now, Silver Birch Way, but I think I really need DGPS for this.

What was the central entrance to the hospital, from Watford Road, is now just a combined foot and cycle path, but I'm not sure if the route also differs.  The main route for the main entrance,  and A&E, is now the the Southern road from Watford Road.

As noted above, the area where the buses used to stop no longer has any roads.  

The Northern entrance from Watford Road has been straightened  out somewhat, but not enough to just project as a straight line.  It overshoots the top right hand corner but is blocked off just after what used to be the bend.  The continuation is into a building site.

Including the continuation into the building site, I assume, it now has Brent street name plates for Silver Birch Way, and seems to have been adopted.

It's now two way up to a little past the corner (a multi-storey car park entrance), and the speed limit has been increased to 20 mph.  That increase extends into the one way section.

The road leading to the University entrance has been re-routed to come out opposite the maternity side road. and is one way, which is unfortunate, as you are committed to going through lifting barriers.  It looks like it is part of the University, but not clearly labelled as such.

There is roundabout, by the road to the back entrance to the main hospital, and opposite to that there is a road exiting the university.  A planter blocks its use as a normal entrance.

There are several bus stops and bus shelters, but they are not all clearly labelled with route numbers, so I think the buses may have to be used to work out which is which.