Richard J. wrote:
JNugent wrote:

There are now buildings on part of the west side of the former M41,
where the hard shoulder used to be.

The only building is the southbound platform structure of the new
Shepherd's Bush station on the West London Line, right at the
southern end of the ex-M41. Then through the new junction you have 4
lanes of A3220 and 4 lanes of slip roads, with no hard shoulders. The
north-facing slip roads continue right up to the point where the
carriageways separate for the approach to the Northern Roundabout,
and from there it has always been 2-lane. The only reason for
building 3-lane carriageways was as part of the full Motorway Box.

How else would you have accommodated road traffic for the Westfield
Centre without "wrecking" the road?

I would have built a new 2+2 road from Wood Lane to Holland Park roundabout
through the development site, and linked the access roads to that. I would
then have made the west side of the green two-way, opened the bus-only cut
through on the east side of the green to all traffic, made the connection
from the green to the roundabout bus/taxi/cycle only, probably one lane each
way. This would make the green into a nice place to sunbathe or shop.