I'm don't think there's a formal link between this BNP initiative and Christian Voice, but here's a quote from one of the Ekklesia articles that I sourced my entry from...
"It is also employing some of the arguments used by Christian Voice and other conservative Christian groups who have claimed that Muslims get better treatment than Christians in Britain."
I don't know whether Christian Voice would align themselves with BNP objectives or not, but certainly there seems to be some overlap.
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