Oxford St part (presumably instigated by UK Uncut?) was good, agree with ifp that it gave proper visibility to the whole thing. For something like this to be effective it's got to disrupt the routines of a lot of people, and at least it got passers-by interested (though some of their reactionary comments were beyond parody). Managed to get a few tax-dodgers to close down temporarily, which was satisfying, and tax evasion stories seem to be prominent in today's papers.
I think at least it gave refreshed visibility to anti-government activism, which seems to have been lagging a bit this year.
Walking past Blackmarket Records after, overheard: "What's that march all about then?" "Pensions, innit"