I think you might get some small shops that aren't affected joining in solidarity, enough to get a bit of a show. As others say, the chance of big shops shutting is v small. But I think something more visual and more directly aimed at Network Rail might get more press than just a shop shutdown plus rally. Is there a risk a shop shut down makes people say stupid things like "see they're putting themselves out of business all by themselves" etc
How about:
- Do a shop shut down so then the traders plus supportive Brixtonians, brass band etc, can make a quick trip up the Victoria line to NR's office on Eversholt street and serve them with a giant eviction notice... Get into the Standard and the Camden local press as well as SLP...
- Traders deliver a Valentine's day package of goods to the CEO of NR...
- We ride a dummy of NR's CEO out of Brixton on a rail (geddit?)...
- Brixton declares 'Clone Day', everyone dresses up the same, stalls serve grey food...
- Do some kind of survey of train customers at Brixton Overground asking them if they would tolerate the increase in fares that not losing the shops down below would entail, send it to the press under heading "Rail Passengers Would Pay More to Save Arches", get some debate going...
- We hijack a train and convert the carriages into a fishmongers, deli, carpet shop, Moroccan cafe etc... hmmm... ok out of ideas now