Spotted...

I can tell the difference, but I've seen Marcus in real life quite a bit and Louis used to live in Harlesden when I did, don't know if he still does.

I always see Marcus Brigstocke with child seat in the mornings round Clapham Junction. He has a Louis Theroux look to him does he not?

Then again any tall guy with black hair, stubble and glasses...

Now I'm just sterotyping. If you are a tall guy with black hair, stubble and glasses and you don't have a child seat, I didn't mean to offend you and I apologise