The unfortunate thing is commuters, I commute to work every day doing about 120miles per day. I drive into the outskirts of london and get stuck in traffic. But there is no way I'm parking my car in the middle of nowhere and cycling the rest of the way.
The only reason I drive is that the public transport can't get me to work on time 4/5 days a week. Every single day the train was 10-30minutes late.
Wow... Driving into London every day is your *best* option?
I visited London last summer. When the bus got into the suburbs I thought "Wow, we're an hour or two ahead of schedule and we're already in the suburbs. Suburbs means we can't be more than half an hour or so away. We're going to be early." Nope. We arrived at the Victoria bus station just about on time.
So, having seen London traffic for myself, I'd say you must have nerves of steel to remain sane if driving into London every day is your best option for getting to work.