Two little points to think about here.
1) You fly from the left seat, not the right.
2) Chuck doesn't have a CFI licence.
Well that is how it used to be!!!
Also you will need to be 206 type rated on your UK licence in order to even consider logging it. (unless you have a full US licence which isn't type specific)
The folk story is many years old and as I heard it the CAA refused to allow hours in the US logged during traffic reporting due to flying left seat and that two pilots can't log PIC. Chuck was logging it but didn't have a CFI licence and he was in the right seat so as soon as he logged you couldn't.
Things to think about: The people that made this rule could have left the CAA.
He that holds the controls should be P1 whatever anyone says regardless of which side they sit..... But the CAA might think differently.
I have no hard facts and know many Europeans that have done it. All have had no problems with the CAA or employers but don't do too many hours as then it will get questioned.