'Fraid not Der, it came through as part of the XR London mailing list. Sign up here if you like: https://actionnetwork.org/forms/get-messages-from-your-london-borough-xr-group Their get in touch link goes to this email address if anybody would like to get involved: XRRentStrike@riseup.net Not seen anything up on the web as of yet...
I guess resisting eviction would need people out on the streets, but I would've thought organising mass refusal of rent payment should be workable online (although admittedly those at highest risk might not have an internet connection). Here's a recent crimethinc article on the subject, translating a spanish analysis: