Lodging Advice?

[smofbabe]

Stephen's leave has been signed off and it appears that we will have a couple of days in London after worldcon. So, I'm applying to the group mind to recommend a reasonably priced, relatively central (or easily accessible to public transport) hotel. I could do my usual time-consuming-but-very-effective Internet searching but I thought for once I might ask for advice first :-> All help greatly appreciated!