Touring London, suggestions?

[Pannonian]

Not quite a pub with character, but the JD Wetherspoons next to Trafalgar Square should be a convenient meeting place. Trafalgar Square being, of course, the spiritual centre point of London, with a fair few sights on routes radiating from there (one one side, you have Westminster and Buckingham Palace, with the pub itself being on Whitehall, while on the other side, you're heading towards Shaftesbury Avenue and Oxford Street). The pub itself should stock some guest beers as well as the best known ones. If you want to experience multicultural London, go towards Oxford Street and you'll pass by Soho And Leicester Square. A genuine London experience should involve meeting up at Trafalgar Square and sitting down in Leicester Square.

Like SwordsMaster says, for militaria in London, the Imperial War Museum is the place to go. However, if you want to climb on a tank, there's a T-34-85 in south London.