Many frequent flyers stand by the fact that if you keep yourself hydrated and get plenty of rest the effects of jet lag should go within a few days. However, there are some other ways to stop Jet Lags effects and there are remedies to stop you getting it all together.
San Francisco to London jet lag information
Lets assume you left San Francisco at 9:00am. The flight takes approximately 10 hours 30 minutes so you would arrive in London at 9:12am San Francisco time which is in fact 5:12pm London time.
Your body will be telling you that its 9:12am but actually its now 5:12pm