Hello
They the government already have the powers i believe to penalise lenders like the NATIONWIDE AND UCB home loans, who are seen to be acting in this way,.
They could use various legislation including the terrorism act, a bit heavy handed i know, AND since the government works for us so to speak, we should encourage them to penalise lenders, who act in this heavy handed fashion, so lets get out there and contact our MP and force the issue.