db :-)
The North Peculiar(A406) was a worse nightmare before the M25 circumnavigated London. Ealing Common ,Gunnersbury. My driving patch was the West End and West/South West London.
I always told my family/friends that when you negotiate/enter Marble Arch or Hyde Park Corner just barge in like a black cab driver does.
Bit unfair advice from me really as I had a white car with jam sandwich stripes and blue lights on the roof when I negotiated these nightmares. The Hanger Lane Gyratory is a barrel of laughs also :-)