I’ve only done that bit of the A4 by bike once when I went right through to the east end. I had a funeral to get to in Tower Hamlets and there was a train strike on. Early-ish on a Sunday morning and it wasn’t too bad until a couple of miles before Hammersmith tbh, but I wouldn’t do it at any busy time. I came back the slightly longer way through Richmond and Twickenham because the roads are way nicer.
I was head down on the TT bike and basically numb to 70mph close passes so I tended to ride the busier roads with more lanes or bigger shoulders rather than deal with "lanes" or anything where a cunt could swing a door out in my path.
I’ve only done that bit of the A4 by bike once when I went right through to the east end. I had a funeral to get to in Tower Hamlets and there was a train strike on. Early-ish on a Sunday morning and it wasn’t too bad until a couple of miles before Hammersmith tbh, but I wouldn’t do it at any busy time. I came back the slightly longer way through Richmond and Twickenham because the roads are way nicer.