The group, which has previously organised sit-ins at Vodafone shops and at upmarket grocer Fortnum & Mason, will be meeting outside St Paul's in London on Saturday morning under the banner "no cuts, no tax-dodging", before joining a TUC march through central London against the government's austerity programme.
The irony is so obvious that even TUC leaders have spotted it.
The man responsible for a string of top grossing films, from Four Weddings and a Funeral to Love Actually, has been crucial in cementing agreement between groups as diverse as Barnardos, the RSPB, the Salvation Army and the TUC.
Not only has austerity hollowed it out almost to breaking point, not only is doubt overshadowing the continuation of NHS and local government services – but the general secretary of the British Trades Union Congress (TUC) also believes this government has lost sight of what lies behind the sector.
But No 10 should beware of attacks on the Beeb and the TUC.
The London protest will be chaired by Wilf Sullivan, TUC race equality officer.
UK Uncut, which organised a sit-in at Vodafone's most high-profile London store in 2010, had always planned to join the TUC march to protest against government cuts Anna Walker, a spokesperson for UK Uncut, said: "Companies such as Starbucks are definitely targets in our sights for future protests.
When Len McCluskey of the giant Unite trade union weighed into Ed Miliband and Ed Balls over their modest recalibration of Labour's economic policy he was embracing a fine old tradition which has existed for most of the century of their co-existence: feuding in public between Labour and the TUC.
He got the job after being interviewed by the another later TUC general secretary, George Woodcock.
Clerical workers at the TUC were poorly paid; the lowest-paid clerical workers at the TUC were female.
TUC general secretary Frances O'Grady said: "The banks shouldn't be spending hours working out how to get around the bonus rules drawn up by the EU to avoid a repeat of the bad behaviour which caused the crash.
