I am back from London as of last night. I did not have a lot of time to explore but did make it to one pub called "The Gun" which was suggested by the hotel concierge as an authentic English pub.
They had several beers on tap, 4 of which were cask ales.
Here I am on the patio area, overlooking the Thames, enjoying a "Jugged Hare". The white dome on the other side of the Thames is the Millenium Dome which was featured in the James Bond movie, "The World is Not Enough."