So apparently the reason my local joint hasn't picked up the phone for the last few days is that they packed up and moved to Romford in September. So thanks to them for keeping their website up to date.
Now, Google's given me a short list of possible replacements, but perhaps anyone here who's dealt with a place themselves can gis a recommendation.
Also, while I'm here: I haven't been getting much practical use out of it it lately - does anyone need a double bass player for anything? Possibly for something like this: http://www.youtube.com/watch?v=82Dv7aGW1IE but even more twee.