Ok, I will give you the info on the place. It's called "Loco Mexicano." It's located on Wilton Road about 2 blocks from Victoria Tube station. Apparently, another UK-Yank has found it too.
http://talk.uk-yankee.com/index.php?topic=38793.0;prev_next=nextMapI can call them and ask about reservations down stairs. Upstairs has more atmosphere (definitely), but it is pretty loud. We can just do straight reservations if you guys want to go to some place first to do the book discussion.. There's a Starbucks right across the street. It is served by bus 24 which runs right in front of it.
The other option I thought of today was to meet at the Tate Britain on Millbank. They have a cafe downstairs, but it might be a bit noisy. Admission to the Tate is by voluntary donation (£3). There are a few pubs nearby we could go to after if anyone wants. It is near to the Victoria line and is nearest to Pimlico station. It can also be reached by ferry from Central London (Tate Modern) and a few buses (not sure the numbers).
I could also contact the pub on Cambridge Street about reserving that back room for a few hours that afternoon.
Anyway, those are my Pimlico/Victoria recommendations. I am open to suggestions elsewhere if people have any.
Let me know.